4469:
54:
45:
352:
1394:
344:
1093:
34:
25:
6922:
1147:
worlds much larger than our own are in fact quite rare. This resulted in some advocating for the retirement of the term "super-earth" as being scientifically misleading. Since 2016 the catalog of known exoplanets has increased significantly, and there have been several published refinements of the mass-radius model. As of 2024, the expected transition point between rocky and intermediate-mass planets sits at roughly 4.4 earth masses, and roughly 1.6 earth radii.
6898:
1325:
4445:
4457:
6910:
6886:
4691:
513:. A greater uncompressed density indicates a greater metal content. Uncompressed density differs from the true average density (also often called "bulk" density) because compression within planet cores increases their density; the average density depends on planet size, temperature distribution, and material stiffness as well as composition.
1302:. Eleven billion of these estimated planets may be orbiting Sun-like stars. The nearest such planet may be 12 light-years away, according to the scientists. However, this does not give estimates for the number of extrasolar terrestrial planets, because there are planets as small as Earth that have been shown to be gas planets (see
1379:
A theoretical type of solid planet that consists almost entirely of iron and therefore has a greater density and a smaller radius than other solid planets of comparable mass. Mercury in the Solar System has a metallic core equal to 60–70% of its planetary mass, and is sometimes called an iron planet,
1406:(such as Titan, Triton, and Enceladus) and many dwarf planets (such as Pluto and Eris) have such a composition. Europa is sometimes considered an icy planet due to its surface ice, but its higher density indicates that its interior is mostly rocky. Such planets can have internal saltwater oceans and
1146:
In 2016, statistical modeling of the relationship between a planet's mass and radius using a broken power law appeared to suggest that the transition point between rocky, terrestrial worlds and mini-Neptunes without a defined surface was in fact very close to Earth and Venus's, suggesting that rocky
2880:
516:
Calculations to estimate uncompressed density inherently require a model of the planet's structure. Where there have been landers or multiple orbiting spacecraft, these models are constrained by seismological data and also moment of inertia data derived from the spacecraft's orbits. Where such data
524:
increases, consistent with the temperature gradient that would have existed within the primordial solar nebula. The
Galilean satellites show a similar trend going outwards from Jupiter; however, no such trend is observable for the icy satellites of Saturn or Uranus. The icy worlds typically have
1065:
from Earth, and has a mass seven to nine times that of Earth and an orbital period of just two Earth days. OGLE-2005-BLG-390Lb has about 5.5 times the mass of Earth and orbits a star about 21,000 light-years away in the constellation
Scorpius. From 2007 to 2010, three (possibly four)
1429:
asteroids and meteorites are common in the Solar System. Ceres and Pallas have mineral compositions similar to carbonaceous chondrites, though Pallas is significantly less hydrated. Coreless planets are thought to form farther from the star where volatile oxidizing material is more
1012:
Most of the planets discovered outside the Solar System are giant planets, because they are more easily detectable. But since 2005, hundreds of potentially terrestrial extrasolar planets have also been found, with several being confirmed as terrestrial. Most of these are
1356:
A theoretical class of planets, composed of a metal core surrounded by primarily carbon-based minerals. They may be considered a type of terrestrial planet if the metal content dominates. The Solar System contains no carbon planets but does have
1309:
Estimates show that about 80% of potentially habitable worlds are covered by land, and about 20% are ocean planets. Planets with rations more like those of Earth, which was 30% land and 70% ocean, only make up 1% of these worlds.
1046:, was discovered, many astronomers assumed it to be a gigantic terrestrial, because it was assumed no gas giant could exist as close to its star (0.052 AU) as 51 Pegasi b did. It was later found to be a gas giant.
2183:
Namely: KOI 326.01 , KOI 701.03 , KOI 268.01 , KOI 1026.01 , KOI 854.01 , KOI 70.03 – Table 6). A more recent study found that one of these candidates (KOI 326.01) is in fact much larger and hotter than first reported.
1695:
Hendrix, Amanda R.; Hurford, Terry A.; Barge, Laura M.; Bland, Michael T.; Bowman, Jeff S.; Brinckerhoff, William; Buratti, Bonnie J.; Cable, Morgan L.; Castillo-Rogez, Julie; Collins, Geoffrey C.; et al. (2019).
402:
in the past, but have been battered out of equilibrium shapes by impacts. Some other protoplanets began to accrete and differentiate but suffered catastrophic collisions that left only a metallic or rocky core, like
2187:
1410:
erupting liquid water (i.e. an internal hydrosphere, like Europa or
Enceladus); they can have an atmosphere and hydrosphere made from methane or nitrogen (like Titan). A metallic core is possible, as exists on
2496:
1380:
though its surface is made of silicates and is iron-poor. Iron planets are thought to form in the high-temperature regions close to a star, like
Mercury, and if the protoplanetary disk is rich in iron.
5684:
5679:
5674:
2135:
5669:
2465:
1625:
Gaffey, Michael (1984). "Rotational spectral variations of asteroid (8) Flora: Implications for the nature of the S-type asteroids and for the parent bodies of the ordinary chondrites".
1425:
A theoretical type of solid planet that consists of silicate rock but has no metallic core, i.e. the opposite of an iron planet. Although the Solar System contains no coreless planets,
430:. They are similar to terrestrial planets in that they have a solid surface, but are composed of ice and rock rather than of rock and metal. These include the dwarf planets, such as
1660:
Hardersen, Paul S.; Gaffey, Michael J. & Abell, Paul A. (2005). "Near-IR spectral evidence for the presence of iron-poor orthopyroxenes on the surfaces of six M-type asteroid".
501:
world has been suggested to define all solid worlds (bodies assuming a rounded shape), without regard to their composition. It would thus include both terrestrial and icy planets.
4372:
3946:
2198:
5664:
4342:
1465:
537:
2337:
2274:
5826:
5691:
4143:
1140:
2709:
2603:
398:, but most merged with or were ejected by the four terrestrial planets, leaving only Pallas and Vesta to survive more or less intact. These two were likely both
1082:, are more-massive super-Earths orbiting in or close to the habitable zone of the star, so they could potentially be habitable, with Earth-like temperatures.
6838:
2671:
2425:"Rogue Rocky Planet Found Adrift in the Milky Way - The diminutive world and others like it could help astronomers probe the mysteries of planet formation"
2139:
5718:
533:), and may be mostly rocky with some surface ice, like Europa. It is unknown whether extrasolar terrestrial planets in general will follow such a trend.
2570:
6218:
6208:
5503:
5498:
2220:
Borucki, William J; et al. (2011). "Characteristics of planetary candidates observed by Kepler, II: Analysis of the first four months of data".
6505:
5659:
5122:
4379:
2455:
1179:
1007:
5917:
2043:
6510:
5426:
2136:"New Planet May Be Among Most Earthlike – Weather Permitting, Alien world could host liquid water if it has 50 percent cloud cover, study says"
375:. The Earth's Moon as well as Jupiter's moons Io and Europa would also count geophysically, as well as perhaps the large protoplanet-asteroids
1891:
3931:
1263:
1259:
1247:
1243:
1231:
1227:
446:
where water ice was stable under direct sunlight in the early Solar System. It also includes the other round moons, which are ice-rock (e.g.
1223:
1219:
1203:
1199:
520:
The uncompressed densities of the rounded terrestrial bodies directly orbiting the Sun trend towards lower values as the distance from the
273:
is about the same size as Vesta, but is significantly less dense; it appears to have never differentiated a core and a mantle. The Earth's
1600:
6813:
5397:
4980:
4076:
2299:
Müller, Simon; Baron, Jana; Helled, Ravit; Bouchy, François; Parc, Léna (June 2024). "The mass–radius relation of exoplanets revisited".
6128:
2891:
5713:
5257:
4665:
3842:
2781:
Marsset, Michaël; Brož, Miroslav; et al. (10 February 2020). "The violent collisional history of aqueously evolved (2) Pallas".
1155:
494:
rather than water. Jupiter's
Ganymede, though icy, does have a metallic core like the Moon, Io, Europa, and the terrestrial planets.
5433:
1089:, was discovered in 2011; it has at least 3.6 times the mass of Earth. The radius and composition of all these planets are unknown.
6555:
6223:
5696:
5533:
5262:
1450:
1135:, including six that are "Earth-size" or "super-Earth-size" (i.e. they have a radius less than twice that of the Earth) and in the
2170:
6590:
6360:
5380:
5866:
5409:
3997:
3642:
3627:
3607:
2913:
2860:
2424:
1032:
2909:
2894:
6261:
5841:
5793:
5788:
5783:
5778:
5773:
5768:
5763:
5758:
5753:
5748:
5743:
5738:
5733:
5728:
5723:
5414:
3941:
3674:
3637:
3632:
2903:
2066:
2023:
1998:
1973:
1925:
1184:
The following exoplanets have a density of at least 5 g/cm and a mass below
Neptune's and are thus very likely terrestrial:
6213:
6198:
5958:
5523:
5513:
4367:
4304:
3958:
3679:
3617:
3612:
2902:
1132:
5247:
2900:
2897:
2893:
2889:
6188:
6163:
5910:
5559:
5493:
4607:
4521:
3622:
1049:
In 2005, the first planets orbiting a main-sequence star and which showed signs of being terrestrial planets were found:
4926:
2907:
2899:
2694:
6823:
6666:
6193:
5851:
5701:
5508:
5385:
2896:
152:
2914:
2910:
2633:
1342:
A solid planet like Venus, Earth, or Mars, made primarily of a silicon-based rocky mantle with a metallic (iron) core.
6203:
5884:
5518:
3770:
3743:
2905:
2593:
285:
has a similar density but has a significant ice layer on the surface: for this reason, it is sometimes considered an
179:
are sometimes included as well, albeit rarely. The terms "terrestrial planet" and "telluric planet" are derived from
6760:
6355:
5579:
5569:
5057:
4158:
2915:
1560:
Asphaug, E.; Reufer, A. (2014). "Mercury and other iron-rich planetary bodies as relics of inefficient accretion".
281:
have similar structures to terrestrial planets, but Earth's Moon has a much smaller iron core. Another Jovian moon
5654:
5605:
5528:
5367:
4670:
2667:
3686:
6345:
5903:
5610:
4337:
3753:
3587:
2067:"The HARPS search for southern extra-solar planets, XVIII. An Earth-mass planet in the GJ 581 planetary system"
53:
6610:
6478:
6287:
6178:
5836:
5483:
5438:
5317:
5307:
5302:
5287:
5282:
3862:
3758:
2735:
5821:
5167:
4275:
6954:
6798:
6671:
6168:
5473:
5252:
4362:
3917:
3897:
3792:
2562:
1485:
5127:
4280:
2912:
6656:
6380:
5816:
5615:
4437:
3963:
3892:
3857:
2890:
2884:
1067:
509:
The uncompressed density of a terrestrial planet is the average density its materials would have at zero
5274:
3877:
1755:
Lainey, V.; Rambaux, N.; Tobie, G.; Cooper, N.; Zhang, Q.; Noyelles, B.; Baillié, K. (7 February 2024).
6876:
6730:
6448:
6370:
5649:
5644:
5634:
5392:
5052:
4352:
4153:
4036:
4019:
3985:
2911:
2853:
2074:
1151:
6315:
6123:
5879:
5629:
5297:
5082:
4966:
4195:
4170:
3980:
2039:
443:
2908:
6949:
6488:
5639:
5584:
5445:
5337:
5232:
4992:
4635:
4486:
4091:
1880:
1143:
ranging from Moon-sized to super-Earths, with many more candidates in this size range (see image).
5352:
2654:
6183:
5861:
5564:
5488:
5062:
4600:
4175:
4002:
3649:
3553:
3460:
3160:
3010:
2901:
2892:
2366:"A terrestrial-mass rogue planet candidate detected in the shortest-timescale microlensing event"
1536:
Russell, David (2017). Geophysical
Classification of Planets, Dwarf Planets, and Moons (Report).
1043:
347:
Relative masses of the terrestrial planets of the Solar System, and the Moon (shown here as Luna)
6740:
6715:
6705:
6545:
6424:
6228:
6153:
5574:
5455:
5067:
5017:
4180:
4118:
4066:
4056:
4041:
3992:
3852:
3782:
3198:
2886:
2338:"A Rogue Earth-Mass Planet Has Been Discovered Freely Floating in the Milky Way Without a Star"
1455:
1128:
1117:
1097:
5042:
4101:
2906:
2898:
2895:
383:(though those are borderline cases). Among these bodies, only the Earth has an active surface
6944:
6843:
6745:
6570:
6463:
6298:
6233:
5926:
5543:
5312:
5187:
5087:
4921:
4546:
4473:
4347:
4200:
4163:
4051:
4046:
2846:
1942:
44:
5112:
4215:
2097:
6833:
6720:
6710:
6681:
6498:
6393:
5856:
5831:
5811:
5421:
5092:
5007:
4703:
4630:
4108:
4061:
3718:
3170:
3135:
3130:
3024:
2975:
2948:
2904:
2883:
2790:
2747:
2515:
2387:
2239:
2093:
1844:
1768:
1709:
1669:
1634:
1569:
1319:
1121:
747:
431:
316:
2887:
2885:
1596:
8:
6646:
6493:
6473:
6419:
6385:
6280:
5952:
5940:
5624:
5172:
5152:
5107:
5077:
4886:
4881:
4680:
4560:
4449:
4287:
4260:
4210:
4014:
3472:
3165:
3017:
2429:
1403:
1279:
1054:
971:
728:
541:
439:
319:, generated by volcanic out-gassing or from comet impact debris. This contrasts with the
156:
3368:
3247:
2794:
2751:
2519:
2391:
2243:
2162:
1848:
1772:
1713:
1673:
1638:
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24:
6914:
6902:
6768:
6625:
6575:
6365:
6293:
5220:
5137:
5097:
5012:
4593:
4540:
4410:
4357:
4235:
4205:
4113:
3926:
2888:
2824:
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2538:
2505:
2491:
2405:
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2255:
2229:
2109:
2083:
1961:
1862:
1834:
1800:
1732:
1697:
1537:
1493:(Video clip). The Johns Hopkins University Applied Physics Laboratory LLC. 17 July 2020
1283:
1163:
470:). Some of these bodies are known to have subsurface hydrospheres (Ganymede, Callisto,
355:
The inner planets (sizes to scale). From left to right: Earth, Mars, Venus and
Mercury.
328:
33:
3341:
3304:
6401:
6271:
5970:
5964:
5468:
5102:
4850:
4845:
4794:
4644:
4400:
3970:
3912:
3703:
3592:
3518:
3453:
3182:
2828:
2816:
2767:
2598:
2543:
2409:
2251:
2194:
2019:
1994:
1969:
1921:
1866:
1857:
1822:
1804:
1792:
1784:
1756:
1737:
1646:
567:
211:
6248:
3424:
2259:
1518:
1120:, specifically designed to discover Earth-size planets around other stars using the
6848:
6788:
6735:
6641:
6615:
6515:
6092:
5946:
5846:
5594:
5357:
5347:
5207:
5157:
5047:
5037:
4961:
4891:
4876:
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4265:
4255:
4148:
4123:
3533:
3503:
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3222:
3062:
2927:
2806:
2798:
2755:
2533:
2523:
2395:
2318:
2247:
2113:
2101:
1852:
1776:
1727:
1717:
1677:
1642:
1577:
1440:
1402:
A type of solid planet with an icy surface of volatiles. In the Solar System, most
1092:
583:
360:
351:
255:
136:
69:
2322:
2117:
2105:
1393:
1024:
During the early 1990s, the first extrasolar planets were discovered orbiting the
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6853:
6676:
6535:
6520:
6483:
6468:
6414:
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6033:
5292:
5132:
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4029:
4007:
3804:
3748:
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3528:
3508:
3477:
3465:
3419:
3407:
3311:
3294:
3254:
3232:
3227:
1681:
1599:. Department of Physics. Astronomy 121 Lecture Notes. University of Oregon.
1419:
1358:
1074:, is only about 1.9 Earth masses, but orbits very close to the star. Two others,
786:
773:
451:
447:
416:
412:
474:, and Titan), like Europa, and it is also possible for some others (e.g. Ceres,
343:
6926:
6750:
6651:
6580:
6530:
6406:
6304:
6041:
5197:
5192:
4997:
4906:
4316:
4096:
4086:
4024:
3887:
3814:
3775:
3696:
3669:
3523:
3497:
3387:
3358:
3336:
3326:
3316:
3269:
2759:
2497:
Proceedings of the
National Academy of Sciences of the United States of America
2460:
2400:
2365:
2342:
2188:"Exclusive: "Most Earth-Like" Exoplanet Gets Major Demotion—It Isn't Habitable"
1780:
1287:
1136:
902:
892:
869:
859:
483:
467:
247:
231:
116:
2802:
2692:
2275:"It's Time To Retire The Super-Earth, The Most Unsupported Idea In Exoplanets"
1017:, i.e. planets with masses between Earth's and Neptune's; super-Earths may be
359:
The Solar System has four terrestrial planets under the dynamical definition:
6938:
6696:
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6620:
6143:
6133:
6006:
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5332:
5327:
5322:
5002:
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4835:
4830:
4805:
4740:
4730:
4720:
4415:
4395:
3975:
3708:
3691:
3512:
3429:
3392:
3363:
3353:
3321:
3299:
3279:
3242:
3215:
3210:
3205:
2820:
1788:
1350:
1329:
1282:
data, that there could be as many as 40 billion Earth- and super-Earth-sized
1028:
948:
922:
912:
819:
708:
490:, Triton, and Pluto). Titan even has surface bodies of liquid, albeit liquid
463:
459:
423:
297:
282:
204:
168:
128:
2528:
2490:
Petigura, Eric A.; Howard, Andrew W.; Marcy, Geoffrey W. (31 October 2013).
1950:. Workshop on Modern Analytical Methods Applied to Earth, Budapest, Hungary.
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6803:
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6540:
6173:
6138:
5478:
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5162:
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4911:
4901:
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4735:
4493:
4479:
4270:
4225:
3882:
3765:
3659:
3599:
3582:
3402:
3380:
3331:
3289:
3274:
3259:
3125:
3084:
3049:
2869:
2547:
1796:
1741:
1445:
1291:
1159:
1050:
958:
882:
849:
829:
796:
487:
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455:
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391:
332:
324:
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243:
215:
124:
63:
2625:
1722:
6793:
6458:
6266:
6084:
6076:
5982:
5404:
5182:
5177:
5147:
5117:
5072:
5027:
5022:
4951:
4936:
4871:
4815:
4810:
4776:
4761:
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4750:
4534:
4528:
4311:
4299:
4294:
4245:
4220:
4190:
4185:
4133:
4128:
3953:
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3787:
3664:
3489:
3412:
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1407:
1373:
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1251:
1239:
1235:
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1014:
999:
839:
384:
200:
5895:
2811:
2065:
Mayor, Michel; Bonfils, Xavier; Forveille, Thierry; et al. (2009).
1881:"Course materials on "mass-radius relationships" in planetary formation"
387:. Europa is believed to have an active hydrosphere under its ice layer.
171:– may also be considered terrestrial planets. The large rocky asteroids
6808:
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6605:
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5375:
5142:
4916:
4840:
4766:
4745:
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4500:
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1460:
1388:
1335:
Several possible classifications for solid planets have been proposed.
1303:
1215:
1211:
1207:
1195:
1191:
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1113:
1086:
1062:
1058:
1018:
1003:
286:
266:
196:
6921:
1597:"Lecture 14 Terrestrial planet atmospheres (primary atmospheres)"
1100:
based on 2,740 candidates orbiting 2,036 stars as of 4 November 2013 (
390:
During the formation of the Solar System, there were many terrestrial
6828:
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6560:
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6350:
6057:
4825:
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164:
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6256:
5215:
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4405:
3872:
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3713:
3448:
3155:
3003:
2313:
1839:
1823:"Probabilistic Forecasting of the Masses and Radii of Other Worlds"
676:
510:
376:
301:
270:
219:
172:
112:
2510:
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309:
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176:
1324:
6818:
6330:
6238:
5538:
4866:
4690:
4625:
4250:
3441:
3436:
3150:
3145:
3111:
3099:
3044:
2996:
2989:
2964:
2959:
2838:
1025:
293:
223:
108:
2655:'Pale blue dots' like Earth may be rare among habitable worlds
1021:
or terrestrial, depending on their mass and other parameters.
338:
4585:
3567:
3140:
3072:
3067:
2982:
2937:
2932:
2693:
JC Castillo Rogez; CA Raymond; CT Russell; Dawn Team (2017).
2064:
1066:
potential terrestrial planets were found orbiting within the
935:
615:
599:
475:
435:
368:
364:
227:
180:
144:
140:
120:
78:
73:
16:
Planet that is composed primarily of silicate rocks or metals
1031:, with masses of 0.02, 4.3, and 3.9 times that of Earth, by
6100:
3193:
3077:
2942:
1466:
List of gravitationally rounded objects of the Solar System
1101:
644:
631:
538:
list of gravitationally rounded objects of the Solar System
372:
274:
251:
160:
148:
82:
6885:
2780:
2492:"Prevalence of Earth-size planets orbiting Sun-like stars"
1653:
525:
densities less than 2 g·cm. Eris is significantly denser (
308:, and others, depending on the presence at any time of an
265:
has a similar structure; possibly so does the smaller one
246:
have the same basic structure, such as a central metallic
5827:
2922:
521:
132:
1754:
1694:
1042:, the first planet found around a star still undergoing
292:
Terrestrial planets can have surface structures such as
2789:(6). Springer Science and Business Media LLC: 569–576.
2563:"17 Billion Earth-Size Alien Planets Inhabit Milky Way"
2298:
1944:
Uncompressed density of the Moon, lunar mantle and core
517:
is not available, uncertainties are inevitably higher.
442:, which are found today only in the regions beyond the
2668:"Scientists Model a Cornucopia of Earth-sized Planets"
1365:. It is unknown if Ceres has a rocky or metallic core.
127:, the terrestrial planets accepted by the IAU are the
6874:
6839:
Potential cultural impact of extraterrestrial contact
1555:
1553:
536:
The data in the tables below are mostly taken from a
2042:. ESO (ESO 15/09 – Science Release). 21 April 2009.
1757:"A recently formed ocean inside Saturn's moon Mimas"
1659:
2594:"Milky Way may host billions of Earth-size planets"
2489:
218:, which are composed mostly of some combination of
1993:. Cambridge New York: Cambridge University Press.
1550:
1512:
1510:
1508:
1166:) unbounded by any star, and free-floating in the
214:, making them substantially different from larger
6219:Habitability of F-type main-sequence star systems
6209:Habitability of K-type main-sequence star systems
5504:Habitability of K-type main-sequence star systems
5499:Habitability of F-type main-sequence star systems
1173:
993:
6936:
6506:Communication with extraterrestrial intelligence
5123:List of interstellar and circumstellar molecules
2585:
2485:
2483:
2364:Mroz, Przemek; et al. (29 September 2020).
1594:
1516:
1180:List of nearest terrestrial exoplanet candidates
1008:List of nearest terrestrial exoplanet candidates
553:Densities of the terrestrial geophysical planets
191:), as these planets are, in terms of structure,
2882:
2456:"Far-Off Planets Like the Earth Dot the Galaxy"
2449:
2447:
1505:
195:. Terrestrial planets are generally studied by
2554:
1816:
1814:
1688:
1588:
5911:
4601:
3043:
2854:
2480:
2363:
1920:(2nd ed.). Academic Press. p. 265.
1559:
2733:
2444:
2416:
1620:
1618:
1345:Carbon planet (also called "diamond planet")
6814:History of the extraterrestrial life debate
6511:Gauss's Pythagorean right triangle proposal
2774:
2738:(2019). "Mercury: Inside the Iron Planet".
2357:
2329:
2292:
1820:
1811:
544:. All distances from the Sun are averages.
339:Terrestrial planets within the Solar System
6129:Planetary habitability in the Solar System
5918:
5904:
4608:
4594:
2861:
2847:
2138:. National Geographic News. Archived from
462:) or even almost pure (at least 99%) ice (
5925:
4666:Exoplanet orbital and physical parameters
2810:
2626:"Newfound Planet is Earth-mass But Gassy"
2537:
2527:
2509:
2399:
2381:
2312:
2233:
2087:
1968:. Cambridge: Cambridge University Press.
1918:Physics and Chemistry of the Solar System
1856:
1838:
1731:
1721:
1615:
1541:
1133:list of 1235 extrasolar planet candidates
1057:. Gliese 876 d orbits the red dwarf
725:Densities of some icy geophysical planets
331:were captured directly from the original
6556:Search for extraterrestrial intelligence
6224:List of potentially habitable exoplanets
5534:List of potentially habitable exoplanets
4380:Interstellar and circumstellar molecules
2686:
1988:
1451:List of potentially habitable exoplanets
1392:
1323:
1278:In 2013, astronomers reported, based on
1091:
555:(including borderline Pallas and Vesta)
350:
342:
6361:Living Interplanetary Flight Experiment
4576:) may be read as "within" or "part of".
3604:Planetary orbit-crossing minor planets
2453:
2219:
2213:
2133:
2032:
2018:. Tucson: University of Arizona Press.
1960:
1940:
1821:Chen, Jingjing; Kipping, David (2016).
1535:
1158:, for the first time, of an Earth-mass
6937:
2272:
2173:from the original on 25 December 2017.
2160:
2013:
1624:
1139:of their star. Since then, Kepler has
6262:Biological Oxidant and Life Detection
5899:
5842:Geodynamics of terrestrial exoplanets
4589:
2842:
2670:. NASA, Goddard Space Flight Center.
2665:
2560:
2423:Redd, Nola Taylor (19 October 2020).
2335:
2185:
2058:
1915:
1897:from the original on 22 December 2017
1150:In September 2020, astronomers using
1085:Another possibly terrestrial planet,
565:
562:
559:
312:liquid or tectonic activity or both.
6214:Habitability of yellow dwarf systems
6199:Habitability of neutron star systems
5959:Viking lander biological experiments
5524:Habitability of yellow dwarf systems
5514:Habitability of neutron star systems
2674:from the original on 24 January 2012
2636:from the original on 28 October 2017
2606:from the original on 6 November 2013
2591:
2468:from the original on 5 November 2013
2422:
547:
62:The four terrestrial planets of the
6189:Habitability of binary star systems
6164:Catalog of Nearby Habitable Systems
5867:Sudarsky's gas giant classification
5494:Habitability of binary star systems
2573:from the original on 6 October 2014
2454:Overbye, Dennis (4 November 2013).
2163:"Thousand-year wait for Titan rain"
2040:"Lightest exoplanet yet discovered"
1129:Kepler space telescope mission team
13:
6824:Nexus for Exoplanet System Science
6667:Hypothetical types of biochemistry
6194:Habitability of natural satellites
5852:Nexus for Exoplanet System Science
5509:Habitability of natural satellites
2878:
2715:from the original on 13 April 2018
2134:Kaufman, Rachel (30 August 2011).
1698:"The NASA Roadmap to Ocean Worlds"
1517:Emily Lakdawalla (21 April 2020).
153:geophysical definition of a planet
14:
6966:
6204:Habitability of red dwarf systems
5519:Habitability of red dwarf systems
1989:Perryman, Michael (26 May 2011).
1603:from the original on 13 July 2011
504:
419:asteroids may be such fragments.
327:, whose atmospheres are primary;
210:Terrestrial planets have a solid
6920:
6908:
6896:
6884:
6356:Life Investigation For Enceladus
5616:Stars with proto-planetary discs
5580:NASA Star and Exoplanet Database
5570:Extrasolar Planets Encyclopaedia
5058:Extraterrestrial sample curation
4689:
4467:
4455:
4443:
2868:
2699:at Ceres: What Have We Learned?"
2666:Naeye, Bob (24 September 2007).
2046:from the original on 5 July 2009
2014:Seager, Sara (15 January 2011).
1108:The first confirmed terrestrial
422:The other round bodies from the
151:. Among astronomers who use the
52:
43:
32:
23:
5529:Habitable zone for complex life
4967:Ultra-short period planet (USP)
4671:Methods of detecting exoplanets
4343:Gravitationally rounded objects
2727:
2659:
2648:
2618:
2592:Khan, Amina (4 November 2013).
2266:
2177:
2154:
2127:
2007:
1982:
1954:
1934:
1909:
1873:
242:All terrestrial planets in the
6346:Journey to Enceladus and Titan
5710:Discovered exoplanets by year
4615:
2336:Gough, Evan (1 October 2020).
2273:Siegel, Ethan (30 June 2021).
2186:Grant, Andrew (8 March 2011).
2161:Rincon, Paul (22 March 2012).
1748:
1529:
1478:
1174:List of terrestrial exoplanets
1141:discovered hundreds of planets
994:Extrasolar terrestrial planets
254:) with a surrounding silicate
111:that is composed primarily of
1:
6479:Berkeley SETI Research Center
6179:Extraterrestrial liquid water
5837:Extrasolar planets in fiction
5484:Extraterrestrial liquid water
1471:
1397:Geysers erupting on Enceladus
6799:Extraterrestrials in fiction
6672:Interplanetary contamination
6169:Circumstellar habitable zone
6053:(unusual light fluctuations)
6045:(unusual light fluctuations)
6037:(unusual light fluctuations)
5857:Planets in globular clusters
5474:Circumstellar habitable zone
2301:Astronomy & Astrophysics
1682:10.1016/j.icarus.2004.10.017
1647:10.1016/0019-1035(84)90140-4
1273:
731:densities are poorly known)
237:
7:
6657:Extraterrestrial hypothesis
5817:Exoplanet naming convention
4927:Planet/Brown dwarf boundary
4438:Outline of the Solar System
4201:Interplanetary medium/space
2323:10.1051/0004-6361/202348690
2106:10.1051/0004-6361/200912172
1434:
1116:, was found in 2011 by the
1068:Gliese 581 planetary system
10:
6971:
6371:Mars sample-return mission
5053:Extraterrestrial materials
4687:
4154:Extraterrestrial materials
2760:10.2138/gselements.15.1.21
2252:10.1088/0004-637X/736/1/19
2075:Astronomy and Astrophysics
1858:10.3847/1538-4357/834/1/17
1781:10.1038/s41586-023-06975-9
1417:
1386:
1371:
1348:
1317:
1177:
997:
426:outward are geophysically
6759:
6695:
6634:
6589:
6447:
6247:
6152:
6124:Earliest known life forms
6116:
6069:
6026:
5999:
5992:
5933:
5880:Discoveries of exoplanets
5875:
5804:
5593:
5552:
5454:
5366:
5273:
5206:
5083:Interplanetary dust cloud
4979:
4859:
4785:
4711:
4698:
4653:
4621:
4474:Earth sciences portal
4433:
4388:
4325:
4196:Interplanetary dust cloud
4075:
3911:
3841:
3552:
3488:
3181:
3034:
2876:
2803:10.1038/s41550-019-1007-5
2370:The Astrophysical Journal
2222:The Astrophysical Journal
1827:The Astrophysical Journal
1595:Schombert, James (2004).
1328:Artist's impression of a
942:
876:
803:
780:
741:
738:
735:
702:
625:
577:
574:
315:Terrestrial planets have
269:. Another rocky asteroid
261:The large rocky asteroid
157:planetary-mass satellites
6489:Breakthrough Initiatives
5585:Open Exoplanet Catalogue
5560:Nearby Habitable Systems
5446:Transit-timing variation
4487:Local Interstellar Cloud
3199:other near-Earth objects
2561:Staff (7 January 2013).
2401:10.3847/2041-8213/abbfad
1941:Szurgot, Marian (2017).
1313:
1098:Kepler planet candidates
6593:extraterrestrial beings
6184:Galactic habitable zone
5862:Small planet radius gap
5565:Exoplanet Data Explorer
5489:Galactic habitable zone
5063:Giant-impact hypothesis
4450:Solar System portal
4176:Giant-impact hypothesis
3783:Trans-Neptunian objects
2529:10.1073/pnas.1319909110
2098:2009A&A...507..487M
1916:Lewis, John S. (2004).
1152:microlensing techniques
742:Distance from Sun (AU)
6741:Planetarium hypothesis
6731:Hart–Tipler conjecture
6716:Dark forest hypothesis
6706:Aestivation hypothesis
6425:Venus In Situ Explorer
6229:Planetary habitability
6018:(misidentified quasar)
6010:(misidentified pulsar)
5822:Exoplanet phase curves
5660:Terrestrial candidates
5611:Multiplanetary systems
5575:NASA Exoplanet Archive
5258:Mean-motion resonances
5068:Gravitational collapse
5018:Circumstellar envelope
4338:Possible dwarf planets
4181:Gravitational collapse
4119:Circumstellar envelope
2918:
1991:The Exoplanet Handbook
1456:Planetary habitability
1398:
1359:carbonaceous asteroids
1332:
1127:In the same year, the
1118:Kepler space telescope
1105:
356:
348:
6844:Post-detection policy
6746:Rare Earth hypothesis
6571:Voyager Golden Record
6464:Allen Telescope Array
6299:Enceladus Life Finder
6234:Superhabitable planet
5927:Extraterrestrial life
5697:Potentially habitable
5602:Exoplanetary systems
5544:Superhabitable planet
5303:F/Yellow-white dwarfs
5188:Sample-return mission
5088:Interplanetary medium
4547:Laniakea Supercluster
4164:Sample-return mission
2917:
2736:Johnson, Catherine L.
1966:Transiting Exoplanets
1723:10.1089/ast.2018.1955
1523:The Planetary Society
1396:
1327:
1318:Further information:
1095:
354:
346:
317:secondary atmospheres
6834:Planetary protection
6721:Firstborn hypothesis
6711:Berserker hypothesis
6682:Mediocrity principle
6499:Breakthrough Message
6117:Life in the Universe
5832:Extragalactic planet
5812:Carl Sagan Institute
5093:Interplanetary space
5008:Circumplanetary disk
4681:Planet-hosting stars
4462:Astronomy portal
4363:Solar System objects
4109:Circumplanetary disk
2142:on 23 September 2011
1404:planetary-mass moons
1361:, such as Ceres and
1320:List of planet types
1280:Kepler space mission
230:existing in various
6955:Terrestrial planets
6647:Directed panspermia
6626:Reptilian humanoids
6494:Breakthrough Listen
6474:Arecibo Observatory
6420:Titan Mare Explorer
5993:Signals of interest
5953:Murchison meteorite
5941:Shergotty meteorite
5173:Protoplanetary disk
5153:Planetary migration
5108:Interstellar medium
4887:Circumtriple planet
4882:Circumbinary planet
4561:Observable universe
4358:Solar System models
4288:Protoplanetary disk
4211:Interstellar medium
4171:Frost/Ice/Snow line
2795:2020NatAs...4..569M
2752:2019Eleme..15...21H
2520:2013PNAS..11019273P
2504:(48): 19273–19278.
2430:Scientific American
2392:2020ApJ...903L..11M
2244:2011ApJ...736...19B
1849:2017ApJ...834...17C
1773:2024Natur.626..280L
1714:2019AsBio..19....1H
1674:2005Icar..175..141H
1639:1984Icar...60...83G
1574:2014NatGe...7..564A
1519:"What Is A Planet?"
1055:OGLE-2005-BLG-390Lb
732:
566:Distance from Sun (
556:
542:planetary-mass moon
444:formation snow line
411:respectively. Many
329:primary atmospheres
277:and Jupiter's moon
6769:Ancient astronauts
6366:Mars Geyser Hopper
6294:Enceladus Explorer
5934:Events and objects
5138:Nebular hypothesis
5113:Interstellar space
5098:Interstellar cloud
5078:Internal structure
5013:Circumstellar disc
4541:Virgo Supercluster
4522:Milky Way subgroup
4353:Natural satellites
4236:Nebular hypothesis
4216:Interstellar space
4206:Interstellar cloud
4114:Circumstellar disc
3704:Near-Earth objects
3588:names and meanings
2919:
2734:Hauck, Steven A.;
2632:. 3 January 2014.
1962:Haswell, Carole A.
1399:
1333:
1164:OGLE-2016-BLG-1928
1106:
724:
552:
357:
349:
97:terrestrial planet
88:Not shown to scale
6872:
6871:
6402:SpaceX Red Dragon
6317:Rosalind Franklin
6112:
6111:
5971:Allan Hills 84001
5965:Allan Hills 77005
5893:
5892:
5469:Astrooceanography
5103:Interstellar dust
4975:
4974:
4851:Ultra-hot Neptune
4846:Ultra-hot Jupiter
4795:Eccentric Jupiter
4645:Planetary science
4583:
4582:
4428:
4427:
4424:
4423:
4401:Lagrangian points
4373:by discovery date
3971:Human spaceflight
3942:historical models
3835:
3834:
3454:S/2015 (136472) 1
2599:Los Angeles Times
2195:Discover Magazine
2025:978-0-8165-2945-2
2000:978-0-521-76559-6
1975:978-0-521-13938-0
1927:978-0-12-446744-6
1767:(7998): 280–282.
1562:Nature Geoscience
1078:and the disputed
990:
989:
983:
982:
720:
719:
212:planetary surface
183:words for Earth (
6962:
6925:
6924:
6913:
6912:
6911:
6901:
6900:
6899:
6889:
6888:
6880:
6849:San Marino Scale
6789:Brookings Report
6736:Neocatastrophism
6642:Cosmic pluralism
6616:Little green men
6591:Types of alleged
6516:Astrolinguistics
6105:
6097:
6096:(unknown origin)
6093:Fast radio burst
6089:
6081:
6062:
6061:(unknown origin)
6058:HD 164595 signal
6054:
6046:
6038:
6019:
6011:
5997:
5996:
5947:Nakhla meteorite
5920:
5913:
5906:
5897:
5896:
5847:Neptunian desert
5233:Tidally detached
5168:Planet formation
5158:Planetary system
5048:Exozodiacal dust
5038:Disrupted planet
4962:Ultra-cool dwarf
4892:Disrupted planet
4877:Chthonian planet
4709:
4708:
4693:
4676:Planetary system
4610:
4603:
4596:
4587:
4586:
4577:
4575:
4566:
4559:
4552:
4545:
4539:
4533:
4527:
4520:
4513:
4506:
4499:
4492:
4485:
4472:
4471:
4470:
4460:
4459:
4458:
4448:
4447:
4446:
4149:Exozodiacal dust
3839:
3838:
3805:Detached objects
3041:
3040:
3037:
3036:
2881:
2863:
2856:
2849:
2840:
2839:
2833:
2832:
2814:
2783:Nature Astronomy
2778:
2772:
2771:
2731:
2725:
2724:
2722:
2720:
2714:
2703:
2690:
2684:
2683:
2681:
2679:
2663:
2657:
2652:
2646:
2645:
2643:
2641:
2622:
2616:
2615:
2613:
2611:
2589:
2583:
2582:
2580:
2578:
2558:
2552:
2551:
2541:
2531:
2513:
2487:
2478:
2477:
2475:
2473:
2451:
2442:
2441:
2439:
2437:
2420:
2414:
2413:
2403:
2385:
2361:
2355:
2354:
2352:
2350:
2333:
2327:
2326:
2316:
2296:
2290:
2289:
2287:
2285:
2270:
2264:
2263:
2237:
2217:
2211:
2210:
2208:
2206:
2197:. Archived from
2181:
2175:
2174:
2158:
2152:
2151:
2149:
2147:
2131:
2125:
2124:
2122:
2116:. Archived from
2091:
2071:
2062:
2056:
2055:
2053:
2051:
2036:
2030:
2029:
2011:
2005:
2004:
1986:
1980:
1979:
1964:(29 July 2010).
1958:
1952:
1951:
1949:
1938:
1932:
1931:
1913:
1907:
1906:
1904:
1902:
1896:
1885:
1877:
1871:
1870:
1860:
1842:
1818:
1809:
1808:
1752:
1746:
1745:
1735:
1725:
1692:
1686:
1685:
1657:
1651:
1650:
1622:
1613:
1612:
1610:
1608:
1592:
1586:
1585:
1582:10.1038/NGEO2189
1557:
1548:
1547:
1545:
1533:
1527:
1526:
1514:
1503:
1502:
1500:
1498:
1492:
1487:Types of Planets
1482:
1441:Chthonian planet
1286:orbiting in the
1168:Milky Way galaxy
1080:Gliese 581d
1070:. The smallest,
733:
723:
557:
551:
548:
532:
530:
167:, and sometimes
56:
47:
36:
27:
6970:
6969:
6965:
6964:
6963:
6961:
6960:
6959:
6950:Types of planet
6935:
6934:
6931:
6919:
6909:
6907:
6897:
6895:
6883:
6875:
6873:
6868:
6864:Xenoarchaeology
6854:Technosignature
6755:
6691:
6677:Kardashev scale
6630:
6592:
6585:
6581:Xenolinguistics
6546:Project Phoenix
6536:Project Cyclops
6521:Lincos language
6484:Bracewell probe
6469:Arecibo message
6450:
6443:
6341:Icebreaker Life
6243:
6155:
6148:
6108:
6103:
6095:
6087:
6079:
6065:
6060:
6052:
6044:
6036:
6022:
6017:
6009:
5988:
5929:
5924:
5894:
5889:
5885:Search projects
5871:
5800:
5589:
5548:
5450:
5422:Radial velocity
5362:
5318:K/Orange dwarfs
5308:G/Yellow dwarfs
5269:
5263:Titius–Bode law
5202:
5133:Molecular cloud
5033:Detached object
4984:
4982:
4971:
4957:Toroidal planet
4947:Sub-brown dwarf
4855:
4781:
4753:(Super-Mercury)
4726:Coreless planet
4702:
4700:
4694:
4685:
4649:
4617:
4614:
4584:
4579:
4573:
4571:
4570:
4564:
4557:
4550:
4543:
4537:
4531:
4525:
4518:
4511:
4504:
4497:
4490:
4483:
4468:
4466:
4456:
4454:
4444:
4442:
4429:
4420:
4384:
4321:
4305:vs. Hill sphere
4231:Molecular cloud
4159:Sample curation
4139:Detached object
4078:
4071:
3915:
3907:
3844:
3831:
3776:Neptune trojans
3559:
3557:
3555:
3548:
3484:
3177:
3048:
3030:
2916:
2879:
2872:
2867:
2837:
2836:
2779:
2775:
2732:
2728:
2718:
2716:
2712:
2701:
2691:
2687:
2677:
2675:
2664:
2660:
2653:
2649:
2639:
2637:
2624:
2623:
2619:
2609:
2607:
2590:
2586:
2576:
2574:
2559:
2555:
2488:
2481:
2471:
2469:
2452:
2445:
2435:
2433:
2421:
2417:
2362:
2358:
2348:
2346:
2334:
2330:
2297:
2293:
2283:
2281:
2271:
2267:
2218:
2214:
2204:
2202:
2201:on 9 March 2011
2182:
2178:
2159:
2155:
2145:
2143:
2132:
2128:
2123:on 21 May 2009.
2120:
2069:
2063:
2059:
2049:
2047:
2038:
2037:
2033:
2026:
2012:
2008:
2001:
1987:
1983:
1976:
1959:
1955:
1947:
1939:
1935:
1928:
1914:
1910:
1900:
1898:
1894:
1883:
1879:
1878:
1874:
1819:
1812:
1753:
1749:
1693:
1689:
1658:
1654:
1623:
1616:
1606:
1604:
1593:
1589:
1558:
1551:
1534:
1530:
1515:
1506:
1496:
1494:
1490:
1484:
1483:
1479:
1474:
1437:
1422:
1420:Coreless planet
1414:Coreless planet
1391:
1376:
1353:
1339:Silicate planet
1322:
1316:
1288:habitable zones
1276:
1182:
1176:
1010:
996:
991:
739:Density (g·cm)
726:
563:Density (g·cm)
554:
528:
526:
507:
341:
240:
232:physical states
216:gaseous planets
155:, two or three
131:closest to the
101:telluric planet
93:
92:
91:
90:
59:
58:
57:
49:
48:
39:
38:
37:
29:
28:
17:
12:
11:
5:
6968:
6958:
6957:
6952:
6947:
6930:
6929:
6917:
6905:
6893:
6870:
6869:
6867:
6866:
6861:
6856:
6851:
6846:
6841:
6836:
6831:
6826:
6821:
6816:
6811:
6806:
6801:
6796:
6791:
6786:
6781:
6776:
6771:
6765:
6763:
6761:Related topics
6757:
6756:
6754:
6753:
6751:Zoo hypothesis
6748:
6743:
6738:
6733:
6728:
6723:
6718:
6713:
6708:
6702:
6700:
6693:
6692:
6690:
6689:
6684:
6679:
6674:
6669:
6664:
6659:
6654:
6652:Drake equation
6649:
6644:
6638:
6636:
6632:
6631:
6629:
6628:
6623:
6618:
6613:
6608:
6603:
6597:
6595:
6587:
6586:
6584:
6583:
6578:
6573:
6568:
6563:
6558:
6553:
6548:
6543:
6538:
6533:
6531:Pioneer plaque
6528:
6523:
6518:
6513:
6508:
6503:
6502:
6501:
6496:
6486:
6481:
6476:
6471:
6466:
6461:
6455:
6453:
6445:
6444:
6442:
6441:
6434:
6427:
6422:
6417:
6412:
6404:
6399:
6391:
6383:
6381:Northern Light
6378:
6373:
6368:
6363:
6358:
6353:
6348:
6343:
6338:
6333:
6328:
6323:
6322:
6321:
6308:
6305:Europa Clipper
6301:
6296:
6291:
6284:
6277:
6269:
6264:
6259:
6253:
6251:
6249:Space missions
6245:
6244:
6242:
6241:
6236:
6231:
6226:
6221:
6216:
6211:
6206:
6201:
6196:
6191:
6186:
6181:
6176:
6171:
6166:
6160:
6158:
6150:
6149:
6147:
6146:
6141:
6136:
6131:
6126:
6120:
6118:
6114:
6113:
6110:
6109:
6107:
6106:
6104:(radio signal)
6098:
6090:
6088:(inconclusive)
6082:
6080:(radio source)
6073:
6071:
6067:
6066:
6064:
6063:
6055:
6047:
6042:EPIC 204278916
6039:
6030:
6028:
6024:
6023:
6021:
6020:
6012:
6003:
6001:
5994:
5990:
5989:
5987:
5986:
5980:
5974:
5968:
5962:
5956:
5950:
5944:
5937:
5935:
5931:
5930:
5923:
5922:
5915:
5908:
5900:
5891:
5890:
5888:
5887:
5882:
5876:
5873:
5872:
5870:
5869:
5864:
5859:
5854:
5849:
5844:
5839:
5834:
5829:
5824:
5819:
5814:
5808:
5806:
5802:
5801:
5799:
5798:
5797:
5796:
5791:
5786:
5781:
5776:
5771:
5766:
5761:
5756:
5751:
5746:
5741:
5736:
5731:
5726:
5721:
5716:
5707:
5706:
5705:
5704:
5699:
5694:
5689:
5688:
5687:
5682:
5677:
5672:
5662:
5657:
5652:
5647:
5642:
5637:
5632:
5621:
5620:
5619:
5618:
5613:
5608:
5599:
5597:
5591:
5590:
5588:
5587:
5582:
5577:
5572:
5567:
5562:
5556:
5554:
5550:
5549:
5547:
5546:
5541:
5536:
5531:
5526:
5521:
5516:
5511:
5506:
5501:
5496:
5491:
5486:
5481:
5476:
5471:
5466:
5460:
5458:
5452:
5451:
5449:
5448:
5443:
5442:
5441:
5434:Transit method
5431:
5430:
5429:
5419:
5418:
5417:
5407:
5402:
5401:
5400:
5390:
5389:
5388:
5381:Direct imaging
5378:
5372:
5370:
5364:
5363:
5361:
5360:
5355:
5350:
5345:
5340:
5335:
5330:
5325:
5320:
5315:
5310:
5305:
5300:
5295:
5290:
5285:
5279:
5277:
5271:
5270:
5268:
5267:
5266:
5265:
5260:
5255:
5250:
5242:
5237:
5236:
5235:
5225:
5224:
5223:
5212:
5210:
5204:
5203:
5201:
5200:
5198:Star formation
5195:
5193:Scattered disc
5190:
5185:
5180:
5175:
5170:
5165:
5160:
5155:
5150:
5145:
5140:
5135:
5130:
5125:
5120:
5115:
5110:
5105:
5100:
5095:
5090:
5085:
5080:
5075:
5070:
5065:
5060:
5055:
5050:
5045:
5043:Excretion disk
5040:
5035:
5030:
5025:
5020:
5015:
5010:
5005:
5000:
4998:Accretion disk
4995:
4989:
4987:
4977:
4976:
4973:
4972:
4970:
4969:
4964:
4959:
4954:
4949:
4944:
4939:
4934:
4929:
4924:
4919:
4914:
4909:
4907:Eyeball planet
4904:
4899:
4894:
4889:
4884:
4879:
4874:
4869:
4863:
4861:
4857:
4856:
4854:
4853:
4848:
4843:
4838:
4833:
4828:
4823:
4818:
4813:
4808:
4803:
4797:
4791:
4789:
4783:
4782:
4780:
4779:
4774:
4769:
4764:
4759:
4754:
4748:
4743:
4738:
4733:
4728:
4723:
4717:
4715:
4706:
4696:
4695:
4688:
4686:
4684:
4683:
4678:
4673:
4668:
4663:
4657:
4655:
4651:
4650:
4648:
4647:
4642:
4641:
4640:
4639:
4638:
4622:
4619:
4618:
4613:
4612:
4605:
4598:
4590:
4581:
4580:
4477:
4476:
4464:
4452:
4440:
4434:
4431:
4430:
4426:
4425:
4422:
4421:
4419:
4418:
4413:
4408:
4403:
4398:
4392:
4390:
4386:
4385:
4383:
4382:
4377:
4376:
4375:
4370:
4360:
4355:
4350:
4345:
4340:
4335:
4329:
4327:
4323:
4322:
4320:
4319:
4317:Scattered disc
4314:
4309:
4308:
4307:
4297:
4292:
4291:
4290:
4285:
4284:
4283:
4273:
4268:
4263:
4258:
4248:
4243:
4238:
4233:
4228:
4223:
4218:
4213:
4208:
4203:
4198:
4193:
4188:
4183:
4178:
4173:
4168:
4167:
4166:
4161:
4151:
4146:
4141:
4136:
4131:
4126:
4121:
4116:
4111:
4106:
4105:
4104:
4102:Excretion disk
4097:Accretion disk
4094:
4089:
4087:Star formation
4083:
4081:
4073:
4072:
4070:
4069:
4064:
4059:
4054:
4049:
4044:
4039:
4034:
4033:
4032:
4022:
4017:
4012:
4011:
4010:
4000:
3995:
3990:
3989:
3988:
3983:
3978:
3976:space stations
3968:
3967:
3966:
3961:
3951:
3950:
3949:
3944:
3939:
3929:
3923:
3921:
3909:
3908:
3906:
3905:
3900:
3895:
3890:
3885:
3880:
3875:
3870:
3865:
3860:
3855:
3849:
3847:
3836:
3833:
3832:
3830:
3829:
3824:
3823:
3822:
3817:
3815:Scattered disc
3812:
3807:
3802:
3801:
3800:
3795:
3780:
3779:
3778:
3773:
3763:
3762:
3761:
3756:
3751:
3746:
3741:
3736:
3731:
3726:
3721:
3711:
3706:
3701:
3700:
3699:
3694:
3689:
3684:
3683:
3682:
3677:
3667:
3662:
3657:
3647:
3646:
3645:
3640:
3635:
3630:
3625:
3620:
3615:
3610:
3602:
3597:
3596:
3595:
3590:
3580:
3575:
3570:
3564:
3562:
3550:
3549:
3547:
3546:
3541:
3536:
3531:
3526:
3521:
3516:
3506:
3501:
3494:
3492:
3486:
3485:
3483:
3482:
3481:
3480:
3470:
3469:
3468:
3458:
3457:
3456:
3446:
3445:
3444:
3434:
3433:
3432:
3427:
3417:
3416:
3415:
3410:
3405:
3400:
3395:
3385:
3384:
3383:
3373:
3372:
3371:
3366:
3361:
3356:
3346:
3345:
3344:
3339:
3334:
3329:
3324:
3319:
3309:
3308:
3307:
3302:
3297:
3292:
3287:
3282:
3277:
3272:
3267:
3262:
3252:
3251:
3250:
3245:
3240:
3235:
3230:
3220:
3219:
3218:
3213:
3203:
3202:
3201:
3196:
3187:
3185:
3179:
3178:
3176:
3175:
3174:
3173:
3168:
3163:
3158:
3153:
3148:
3143:
3138:
3133:
3123:
3122:
3121:
3120:
3119:
3114:
3104:
3103:
3102:
3097:
3082:
3081:
3080:
3075:
3070:
3065:
3054:
3052:
3035:
3032:
3031:
3029:
3028:
3021:
3014:
3007:
3000:
2993:
2986:
2979:
2972:
2967:
2962:
2957:
2952:
2945:
2940:
2935:
2930:
2925:
2877:
2874:
2873:
2866:
2865:
2858:
2851:
2843:
2835:
2834:
2773:
2726:
2685:
2658:
2647:
2617:
2584:
2553:
2479:
2461:New York Times
2443:
2415:
2356:
2343:Universe Today
2328:
2291:
2265:
2212:
2176:
2153:
2126:
2082:(1): 487–494.
2057:
2031:
2024:
2006:
1999:
1981:
1974:
1953:
1933:
1926:
1908:
1872:
1810:
1747:
1687:
1652:
1614:
1587:
1568:(8): 564–568.
1549:
1528:
1504:
1476:
1475:
1473:
1470:
1469:
1468:
1463:
1458:
1453:
1448:
1443:
1436:
1433:
1432:
1431:
1418:Main article:
1416:
1415:
1412:
1387:Main article:
1385:
1384:
1381:
1372:Main article:
1370:
1369:
1366:
1349:Main article:
1347:
1346:
1343:
1340:
1315:
1312:
1292:Sun-like stars
1275:
1272:
1175:
1172:
1137:habitable zone
995:
992:
988:
987:
981:
980:
977:
974:
968:
967:
964:
961:
955:
954:
951:
945:
944:
941:
938:
932:
931:
928:
925:
919:
918:
915:
909:
908:
905:
899:
898:
895:
889:
888:
885:
879:
878:
875:
872:
866:
865:
862:
856:
855:
852:
846:
845:
842:
836:
835:
832:
826:
825:
822:
816:
815:
812:
806:
805:
802:
799:
793:
792:
789:
783:
782:
779:
776:
770:
769:
766:
763:
757:
756:
753:
750:
744:
743:
740:
737:
721:
718:
717:
714:
711:
705:
704:
701:
698:
695:
689:
688:
685:
682:
679:
673:
672:
669:
666:
663:
657:
656:
653:
650:
647:
641:
640:
637:
634:
628:
627:
624:
621:
618:
612:
611:
608:
605:
602:
596:
595:
592:
589:
586:
580:
579:
576:
572:
571:
564:
561:
546:
531:0.05 g·cm
506:
505:Density trends
503:
340:
337:
239:
236:
86:
85:
76:
61:
60:
51:
50:
42:
41:
40:
31:
30:
22:
21:
20:
19:
18:
15:
9:
6:
4:
3:
2:
6967:
6956:
6953:
6951:
6948:
6946:
6943:
6942:
6940:
6933:
6928:
6923:
6918:
6916:
6906:
6904:
6894:
6892:
6887:
6882:
6881:
6878:
6865:
6862:
6860:
6857:
6855:
6852:
6850:
6847:
6845:
6842:
6840:
6837:
6835:
6832:
6830:
6827:
6825:
6822:
6820:
6817:
6815:
6812:
6810:
6807:
6805:
6802:
6800:
6797:
6795:
6792:
6790:
6787:
6785:
6782:
6780:
6777:
6775:
6772:
6770:
6767:
6766:
6764:
6762:
6758:
6752:
6749:
6747:
6744:
6742:
6739:
6737:
6734:
6732:
6729:
6727:
6724:
6722:
6719:
6717:
6714:
6712:
6709:
6707:
6704:
6703:
6701:
6698:
6697:Fermi paradox
6694:
6688:
6685:
6683:
6680:
6678:
6675:
6673:
6670:
6668:
6665:
6663:
6662:Fermi paradox
6660:
6658:
6655:
6653:
6650:
6648:
6645:
6643:
6640:
6639:
6637:
6633:
6627:
6624:
6622:
6621:Nordic aliens
6619:
6617:
6614:
6612:
6609:
6607:
6604:
6602:
6601:Energy beings
6599:
6598:
6596:
6594:
6588:
6582:
6579:
6577:
6574:
6572:
6569:
6567:
6564:
6562:
6559:
6557:
6554:
6552:
6549:
6547:
6544:
6542:
6539:
6537:
6534:
6532:
6529:
6527:
6524:
6522:
6519:
6517:
6514:
6512:
6509:
6507:
6504:
6500:
6497:
6495:
6492:
6491:
6490:
6487:
6485:
6482:
6480:
6477:
6475:
6472:
6470:
6467:
6465:
6462:
6460:
6457:
6456:
6454:
6452:
6451:communication
6446:
6440:
6439:
6435:
6433:
6432:
6428:
6426:
6423:
6421:
6418:
6416:
6413:
6411:
6409:
6405:
6403:
6400:
6398:
6396:
6392:
6390:
6388:
6384:
6382:
6379:
6377:
6374:
6372:
6369:
6367:
6364:
6362:
6359:
6357:
6354:
6352:
6349:
6347:
6344:
6342:
6339:
6337:
6334:
6332:
6329:
6327:
6324:
6320:
6318:
6314:
6313:
6312:
6309:
6307:
6306:
6302:
6300:
6297:
6295:
6292:
6290:
6289:
6285:
6283:
6282:
6278:
6276:
6274:
6270:
6268:
6265:
6263:
6260:
6258:
6255:
6254:
6252:
6250:
6246:
6240:
6237:
6235:
6232:
6230:
6227:
6225:
6222:
6220:
6217:
6215:
6212:
6210:
6207:
6205:
6202:
6200:
6197:
6195:
6192:
6190:
6187:
6185:
6182:
6180:
6177:
6175:
6172:
6170:
6167:
6165:
6162:
6161:
6159:
6157:
6151:
6145:
6144:Life on Titan
6142:
6140:
6137:
6135:
6134:Life on Venus
6132:
6130:
6127:
6125:
6122:
6121:
6119:
6115:
6102:
6099:
6094:
6091:
6086:
6083:
6078:
6075:
6074:
6072:
6068:
6059:
6056:
6051:
6048:
6043:
6040:
6035:
6032:
6031:
6029:
6025:
6016:
6013:
6008:
6005:
6004:
6002:
6000:Misidentified
5998:
5995:
5991:
5984:
5981:
5978:
5977:Yamato 000593
5975:
5972:
5969:
5966:
5963:
5960:
5957:
5954:
5951:
5948:
5945:
5942:
5939:
5938:
5936:
5932:
5928:
5921:
5916:
5914:
5909:
5907:
5902:
5901:
5898:
5886:
5883:
5881:
5878:
5877:
5874:
5868:
5865:
5863:
5860:
5858:
5855:
5853:
5850:
5848:
5845:
5843:
5840:
5838:
5835:
5833:
5830:
5828:
5825:
5823:
5820:
5818:
5815:
5813:
5810:
5809:
5807:
5803:
5795:
5792:
5790:
5787:
5785:
5782:
5780:
5777:
5775:
5772:
5770:
5767:
5765:
5762:
5760:
5757:
5755:
5752:
5750:
5747:
5745:
5742:
5740:
5737:
5735:
5732:
5730:
5727:
5725:
5722:
5720:
5717:
5715:
5712:
5711:
5709:
5708:
5703:
5700:
5698:
5695:
5693:
5690:
5686:
5683:
5681:
5678:
5676:
5673:
5671:
5668:
5667:
5666:
5663:
5661:
5658:
5656:
5653:
5651:
5648:
5646:
5643:
5641:
5638:
5636:
5633:
5631:
5628:
5627:
5626:
5623:
5622:
5617:
5614:
5612:
5609:
5607:
5604:
5603:
5601:
5600:
5598:
5596:
5592:
5586:
5583:
5581:
5578:
5576:
5573:
5571:
5568:
5566:
5563:
5561:
5558:
5557:
5555:
5551:
5545:
5542:
5540:
5537:
5535:
5532:
5530:
5527:
5525:
5522:
5520:
5517:
5515:
5512:
5510:
5507:
5505:
5502:
5500:
5497:
5495:
5492:
5490:
5487:
5485:
5482:
5480:
5477:
5475:
5472:
5470:
5467:
5465:
5462:
5461:
5459:
5457:
5453:
5447:
5444:
5440:
5437:
5436:
5435:
5432:
5428:
5425:
5424:
5423:
5420:
5416:
5413:
5412:
5411:
5408:
5406:
5403:
5399:
5396:
5395:
5394:
5391:
5387:
5384:
5383:
5382:
5379:
5377:
5374:
5373:
5371:
5369:
5365:
5359:
5358:Yellow giants
5356:
5354:
5351:
5349:
5346:
5344:
5341:
5339:
5336:
5334:
5331:
5329:
5326:
5324:
5321:
5319:
5316:
5314:
5311:
5309:
5306:
5304:
5301:
5299:
5296:
5294:
5291:
5289:
5286:
5284:
5281:
5280:
5278:
5276:
5272:
5264:
5261:
5259:
5256:
5254:
5251:
5249:
5246:
5245:
5243:
5241:
5238:
5234:
5231:
5230:
5229:
5226:
5222:
5219:
5218:
5217:
5214:
5213:
5211:
5209:
5205:
5199:
5196:
5194:
5191:
5189:
5186:
5184:
5181:
5179:
5176:
5174:
5171:
5169:
5166:
5164:
5161:
5159:
5156:
5154:
5151:
5149:
5146:
5144:
5141:
5139:
5136:
5134:
5131:
5129:
5128:Merging stars
5126:
5124:
5121:
5119:
5116:
5114:
5111:
5109:
5106:
5104:
5101:
5099:
5096:
5094:
5091:
5089:
5086:
5084:
5081:
5079:
5076:
5074:
5071:
5069:
5066:
5064:
5061:
5059:
5056:
5054:
5051:
5049:
5046:
5044:
5041:
5039:
5036:
5034:
5031:
5029:
5026:
5024:
5021:
5019:
5016:
5014:
5011:
5009:
5006:
5004:
5003:Asteroid belt
5001:
4999:
4996:
4994:
4991:
4990:
4988:
4986:
4978:
4968:
4965:
4963:
4960:
4958:
4955:
4953:
4950:
4948:
4945:
4943:
4942:Pulsar planet
4940:
4938:
4935:
4933:
4930:
4928:
4925:
4923:
4920:
4918:
4915:
4913:
4910:
4908:
4905:
4903:
4900:
4898:
4897:Double planet
4895:
4893:
4890:
4888:
4885:
4883:
4880:
4878:
4875:
4873:
4870:
4868:
4865:
4864:
4862:
4858:
4852:
4849:
4847:
4844:
4842:
4839:
4837:
4836:Super-Neptune
4834:
4832:
4831:Super-Jupiter
4829:
4827:
4824:
4822:
4819:
4817:
4814:
4812:
4809:
4807:
4806:Helium planet
4804:
4801:
4798:
4796:
4793:
4792:
4790:
4788:
4784:
4778:
4775:
4773:
4770:
4768:
4765:
4763:
4760:
4758:
4755:
4752:
4749:
4747:
4744:
4742:
4741:Hycean planet
4739:
4737:
4734:
4732:
4731:Desert planet
4729:
4727:
4724:
4722:
4721:Carbon planet
4719:
4718:
4716:
4714:
4710:
4707:
4705:
4697:
4692:
4682:
4679:
4677:
4674:
4672:
4669:
4667:
4664:
4662:
4659:
4658:
4656:
4652:
4646:
4643:
4637:
4634:
4633:
4632:
4629:
4628:
4627:
4624:
4623:
4620:
4611:
4606:
4604:
4599:
4597:
4592:
4591:
4588:
4578:
4569:
4562:
4555:
4548:
4542:
4536:
4530:
4523:
4516:
4509:
4502:
4495:
4488:
4481:
4475:
4465:
4463:
4453:
4451:
4441:
4439:
4436:
4435:
4432:
4417:
4416:Tidal locking
4414:
4412:
4409:
4407:
4404:
4402:
4399:
4397:
4396:Double planet
4394:
4393:
4391:
4387:
4381:
4378:
4374:
4371:
4369:
4366:
4365:
4364:
4361:
4359:
4356:
4354:
4351:
4349:
4348:Minor planets
4346:
4344:
4341:
4339:
4336:
4334:
4331:
4330:
4328:
4324:
4318:
4315:
4313:
4310:
4306:
4303:
4302:
4301:
4298:
4296:
4293:
4289:
4286:
4282:
4281:Merging stars
4279:
4278:
4277:
4274:
4272:
4269:
4267:
4264:
4262:
4259:
4257:
4254:
4253:
4252:
4249:
4247:
4244:
4242:
4239:
4237:
4234:
4232:
4229:
4227:
4224:
4222:
4219:
4217:
4214:
4212:
4209:
4207:
4204:
4202:
4199:
4197:
4194:
4192:
4189:
4187:
4184:
4182:
4179:
4177:
4174:
4172:
4169:
4165:
4162:
4160:
4157:
4156:
4155:
4152:
4150:
4147:
4145:
4142:
4140:
4137:
4135:
4132:
4130:
4127:
4125:
4122:
4120:
4117:
4115:
4112:
4110:
4107:
4103:
4100:
4099:
4098:
4095:
4093:
4090:
4088:
4085:
4084:
4082:
4080:
4074:
4068:
4065:
4063:
4060:
4058:
4055:
4053:
4050:
4048:
4045:
4043:
4040:
4038:
4035:
4031:
4028:
4027:
4026:
4023:
4021:
4018:
4016:
4013:
4009:
4006:
4005:
4004:
4001:
3999:
3996:
3994:
3991:
3987:
3984:
3982:
3979:
3977:
3974:
3973:
3972:
3969:
3965:
3962:
3960:
3957:
3956:
3955:
3952:
3948:
3945:
3943:
3940:
3938:
3935:
3934:
3933:
3930:
3928:
3925:
3924:
3922:
3919:
3914:
3910:
3904:
3901:
3899:
3896:
3894:
3891:
3889:
3886:
3884:
3883:Subsatellites
3881:
3879:
3876:
3874:
3871:
3869:
3866:
3864:
3861:
3859:
3856:
3854:
3851:
3850:
3848:
3846:
3843:Hypothetical
3840:
3837:
3828:
3825:
3821:
3818:
3816:
3813:
3811:
3808:
3806:
3803:
3799:
3796:
3794:
3791:
3790:
3789:
3786:
3785:
3784:
3781:
3777:
3774:
3772:
3769:
3768:
3767:
3764:
3760:
3757:
3755:
3752:
3750:
3747:
3745:
3742:
3740:
3737:
3735:
3732:
3730:
3727:
3725:
3722:
3720:
3717:
3716:
3715:
3712:
3710:
3709:Asteroid belt
3707:
3705:
3702:
3698:
3695:
3693:
3690:
3688:
3685:
3681:
3678:
3676:
3673:
3672:
3671:
3668:
3666:
3663:
3661:
3658:
3656:
3653:
3652:
3651:
3648:
3644:
3641:
3639:
3636:
3634:
3631:
3629:
3626:
3624:
3621:
3619:
3616:
3614:
3611:
3609:
3606:
3605:
3603:
3601:
3598:
3594:
3591:
3589:
3586:
3585:
3584:
3583:Minor planets
3581:
3579:
3576:
3574:
3571:
3569:
3566:
3565:
3563:
3561:
3551:
3545:
3542:
3540:
3537:
3535:
3532:
3530:
3527:
3525:
3522:
3520:
3517:
3514:
3510:
3507:
3505:
3502:
3499:
3496:
3495:
3493:
3491:
3487:
3479:
3476:
3475:
3474:
3471:
3467:
3464:
3463:
3462:
3459:
3455:
3452:
3451:
3450:
3447:
3443:
3440:
3439:
3438:
3435:
3431:
3428:
3426:
3423:
3422:
3421:
3418:
3414:
3411:
3409:
3406:
3404:
3401:
3399:
3396:
3394:
3391:
3390:
3389:
3386:
3382:
3379:
3378:
3377:
3374:
3370:
3367:
3365:
3362:
3360:
3357:
3355:
3352:
3351:
3350:
3347:
3343:
3340:
3338:
3335:
3333:
3330:
3328:
3325:
3323:
3320:
3318:
3315:
3314:
3313:
3310:
3306:
3303:
3301:
3298:
3296:
3293:
3291:
3288:
3286:
3283:
3281:
3278:
3276:
3273:
3271:
3268:
3266:
3263:
3261:
3258:
3257:
3256:
3253:
3249:
3246:
3244:
3241:
3239:
3236:
3234:
3231:
3229:
3226:
3225:
3224:
3221:
3217:
3214:
3212:
3209:
3208:
3207:
3204:
3200:
3197:
3195:
3192:
3191:
3189:
3188:
3186:
3184:
3180:
3172:
3169:
3167:
3164:
3162:
3159:
3157:
3154:
3152:
3149:
3147:
3144:
3142:
3139:
3137:
3134:
3132:
3129:
3128:
3127:
3124:
3118:
3115:
3113:
3110:
3109:
3108:
3105:
3101:
3098:
3096:
3093:
3092:
3091:
3088:
3087:
3086:
3083:
3079:
3076:
3074:
3071:
3069:
3066:
3064:
3061:
3060:
3059:
3056:
3055:
3053:
3051:
3046:
3042:
3039:
3038:
3033:
3027:
3026:
3022:
3020:
3019:
3015:
3013:
3012:
3008:
3006:
3005:
3001:
2999:
2998:
2994:
2992:
2991:
2987:
2985:
2984:
2980:
2978:
2977:
2973:
2971:
2968:
2966:
2963:
2961:
2958:
2956:
2953:
2951:
2950:
2946:
2944:
2941:
2939:
2936:
2934:
2931:
2929:
2926:
2924:
2921:
2920:
2875:
2871:
2864:
2859:
2857:
2852:
2850:
2845:
2844:
2841:
2830:
2826:
2822:
2818:
2813:
2808:
2804:
2800:
2796:
2792:
2788:
2784:
2777:
2769:
2765:
2761:
2757:
2753:
2749:
2745:
2741:
2737:
2730:
2711:
2707:
2700:
2698:
2689:
2673:
2669:
2662:
2656:
2651:
2635:
2631:
2627:
2621:
2605:
2601:
2600:
2595:
2588:
2572:
2568:
2564:
2557:
2549:
2545:
2540:
2535:
2530:
2525:
2521:
2517:
2512:
2507:
2503:
2499:
2498:
2493:
2486:
2484:
2467:
2463:
2462:
2457:
2450:
2448:
2432:
2431:
2426:
2419:
2411:
2407:
2402:
2397:
2393:
2389:
2384:
2379:
2375:
2371:
2367:
2360:
2345:
2344:
2339:
2332:
2324:
2320:
2315:
2310:
2306:
2302:
2295:
2280:
2276:
2269:
2261:
2257:
2253:
2249:
2245:
2241:
2236:
2231:
2227:
2223:
2216:
2200:
2196:
2192:
2189:
2180:
2172:
2168:
2164:
2157:
2141:
2137:
2130:
2119:
2115:
2111:
2107:
2103:
2099:
2095:
2090:
2085:
2081:
2077:
2076:
2068:
2061:
2045:
2041:
2035:
2027:
2021:
2017:
2010:
2002:
1996:
1992:
1985:
1977:
1971:
1967:
1963:
1957:
1946:
1945:
1937:
1929:
1923:
1919:
1912:
1893:
1889:
1882:
1876:
1868:
1864:
1859:
1854:
1850:
1846:
1841:
1836:
1832:
1828:
1824:
1817:
1815:
1806:
1802:
1798:
1794:
1790:
1786:
1782:
1778:
1774:
1770:
1766:
1762:
1758:
1751:
1743:
1739:
1734:
1729:
1724:
1719:
1715:
1711:
1707:
1703:
1699:
1691:
1683:
1679:
1675:
1671:
1667:
1663:
1656:
1648:
1644:
1640:
1636:
1633:(1): 83–114.
1632:
1628:
1621:
1619:
1602:
1598:
1591:
1583:
1579:
1575:
1571:
1567:
1563:
1556:
1554:
1544:
1539:
1532:
1524:
1520:
1513:
1511:
1509:
1489:
1488:
1481:
1477:
1467:
1464:
1462:
1459:
1457:
1454:
1452:
1449:
1447:
1444:
1442:
1439:
1438:
1428:
1424:
1423:
1421:
1413:
1409:
1408:cryovolcanoes
1405:
1401:
1400:
1395:
1390:
1382:
1378:
1377:
1375:
1367:
1364:
1360:
1355:
1354:
1352:
1351:Carbon planet
1344:
1341:
1338:
1337:
1336:
1331:
1330:carbon planet
1326:
1321:
1311:
1307:
1305:
1301:
1297:
1293:
1289:
1285:
1281:
1271:
1269:
1265:
1261:
1257:
1253:
1249:
1245:
1241:
1237:
1233:
1229:
1225:
1221:
1217:
1213:
1209:
1205:
1201:
1197:
1193:
1189:
1185:
1181:
1171:
1169:
1165:
1161:
1157:
1154:reported the
1153:
1148:
1144:
1142:
1138:
1134:
1130:
1125:
1123:
1119:
1115:
1111:
1103:
1099:
1094:
1090:
1088:
1083:
1081:
1077:
1073:
1069:
1064:
1060:
1056:
1052:
1047:
1045:
1041:
1036:
1034:
1033:pulsar timing
1030:
1027:
1022:
1020:
1016:
1009:
1005:
1001:
986:
978:
975:
973:
970:
969:
965:
962:
960:
957:
956:
952:
950:
947:
946:
939:
937:
934:
933:
929:
926:
924:
921:
920:
916:
914:
911:
910:
906:
904:
901:
900:
896:
894:
891:
890:
886:
884:
881:
880:
873:
871:
868:
867:
863:
861:
858:
857:
853:
851:
848:
847:
843:
841:
838:
837:
833:
831:
828:
827:
823:
821:
818:
817:
813:
811:
808:
807:
800:
798:
795:
794:
790:
788:
785:
784:
777:
775:
772:
771:
767:
764:
762:
759:
758:
754:
751:
749:
746:
745:
734:
730:
722:
715:
712:
710:
707:
706:
699:
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694:
691:
690:
686:
683:
680:
678:
675:
674:
670:
667:
664:
662:
659:
658:
654:
651:
648:
646:
643:
642:
638:
635:
633:
630:
629:
622:
619:
617:
614:
613:
609:
606:
603:
601:
598:
597:
593:
590:
587:
585:
582:
581:
578:Uncompressed
573:
569:
558:
550:
549:
545:
543:
539:
534:
523:
518:
514:
512:
502:
500:
495:
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485:
481:
477:
473:
469:
465:
461:
457:
453:
449:
445:
441:
437:
433:
429:
425:
424:asteroid belt
420:
418:
414:
410:
406:
401:
400:dwarf planets
397:
396:proto-planets
393:
392:planetesimals
388:
386:
382:
378:
374:
370:
366:
362:
353:
345:
336:
334:
330:
326:
325:giant planets
322:
318:
313:
311:
307:
303:
299:
295:
290:
288:
284:
280:
276:
272:
268:
264:
259:
257:
253:
249:
245:
235:
233:
229:
225:
221:
217:
213:
208:
206:
205:geophysicists
202:
198:
194:
190:
186:
182:
178:
174:
170:
166:
162:
158:
154:
150:
146:
142:
138:
134:
130:
129:inner planets
126:
123:. Within the
122:
118:
114:
110:
106:
102:
98:
89:
84:
80:
77:
75:
71:
68:
67:
65:
55:
46:
35:
26:
6945:Solar System
6932:
6859:UFO religion
6804:Extremophile
6784:Biosignature
6779:Astroecology
6774:Astrobiology
6726:Great Filter
6541:Project Ozma
6449:Interstellar
6436:
6429:
6407:
6395:Perseverance
6394:
6386:
6316:
6303:
6286:
6279:
6272:
6174:Earth analog
6156:habitability
6139:Life on Mars
5702:Proper names
5479:Earth analog
5464:Astrobiology
5456:Habitability
5393:Microlensing
5353:White dwarfs
5323:M/Red dwarfs
5313:Herbig Ae/Be
5298:Brown dwarfs
5240:Rogue planet
5221:Interstellar
5163:Planetesimal
4932:Planetesimal
4912:Giant planet
4902:Ecumenopolis
4800:Mini-Neptune
4736:Dwarf planet
4712:
4572:Each arrow (
4494:Local Bubble
4480:Solar System
4478:
4271:Planetesimal
4226:Kuiper cliff
3954:Space probes
3927:Colonization
3766:Kirkwood gap
3687:Saturn Moons
3600:Planetesimal
3058:Terrestrials
3057:
3023:
3016:
3009:
3002:
2995:
2988:
2981:
2974:
2947:
2870:Solar System
2812:10261/237549
2786:
2782:
2776:
2746:(1): 21–26.
2743:
2739:
2729:
2717:. Retrieved
2705:
2696:
2688:
2676:. Retrieved
2661:
2650:
2638:. Retrieved
2629:
2620:
2608:. Retrieved
2597:
2587:
2575:. Retrieved
2556:
2501:
2495:
2470:. Retrieved
2459:
2434:. Retrieved
2428:
2418:
2383:2009.12377v1
2373:
2369:
2359:
2347:. Retrieved
2341:
2331:
2304:
2300:
2294:
2282:. Retrieved
2278:
2268:
2225:
2221:
2215:
2203:. Retrieved
2199:the original
2191:
2179:
2166:
2156:
2144:. Retrieved
2140:the original
2129:
2118:the original
2079:
2073:
2060:
2048:. Retrieved
2034:
2015:
2009:
1990:
1984:
1965:
1956:
1943:
1936:
1917:
1911:
1899:. Retrieved
1887:
1875:
1830:
1826:
1764:
1760:
1750:
1705:
1702:Astrobiology
1701:
1690:
1665:
1661:
1655:
1630:
1626:
1605:. Retrieved
1590:
1565:
1561:
1531:
1522:
1495:. Retrieved
1486:
1480:
1446:Earth analog
1334:
1308:
1277:
1186:
1183:
1160:rogue planet
1149:
1145:
1126:
1107:
1084:
1051:Gliese 876 d
1048:
1037:
1029:PSR B1257+12
1023:
1015:super-Earths
1011:
984:
535:
519:
515:
508:
498:
496:
427:
421:
389:
358:
333:solar nebula
314:
291:
260:
244:Solar System
241:
209:
192:
188:
184:
125:Solar System
105:rocky planet
104:
100:
96:
94:
87:
64:Solar System
6915:Outer space
6903:Spaceflight
6794:Exotheology
6606:Grey aliens
6459:Active SETI
6387:Opportunity
6267:BioSentinel
6085:Wow! signal
6034:KIC 8462852
5983:CI1 fossils
5714:before 2000
5630:Discoveries
5405:Polarimetry
5293:Binary star
5183:Rubble pile
5178:Ring system
5148:Outer space
5118:Kuiper belt
5073:Hills cloud
5028:Debris disk
5023:Cosmic dust
4952:Sub-Neptune
4937:Protoplanet
4872:Brown dwarf
4860:Other types
4816:Hot Neptune
4811:Hot Jupiter
4802:(Gas dwarf)
4777:Super-Earth
4762:Ocean world
4757:Lava planet
4751:Iron planet
4713:Terrestrial
4654:Main topics
4535:Local Sheet
4529:Local Group
4312:Rubble pile
4300:Roche limit
4295:Ring system
4246:Outer space
4221:Kuiper belt
4191:Hill sphere
4186:Hills cloud
4134:Debris disk
4129:Cosmic dust
3913:Exploration
3868:Planet Nine
3853:Fifth giant
3827:Hills cloud
3788:Kuiper belt
3759:exceptional
3675:Trojan camp
2630:harvard.edu
2146:5 September
1888:caltech.edu
1708:(1): 1–27.
1607:22 December
1374:Iron planet
1368:Iron planet
1304:Kepler-138d
1298:within the
1268:Kepler-409b
1264:Kepler-406c
1260:Kepler-406b
1256:Kepler-138c
1252:Kepler-131c
1248:Kepler-131b
1244:Kepler-113b
1240:Kepler-102d
1236:Kepler-102b
1232:Kepler-101c
1228:Kepler-100b
1131:released a
1076:Gliese 581c
1072:Gliese 581e
1063:light years
1040:51 Pegasi b
1019:gas planets
1000:Super-Earth
428:icy planets
385:hydrosphere
201:astronomers
6939:Categories
6829:Noogenesis
6809:Hemolithin
6687:Panspermia
6635:Hypotheses
6611:Insectoids
6576:Water hole
6077:SHGb02+14a
6050:VVV-WIT-07
5625:Exoplanets
5606:Host stars
5553:Catalogues
5376:Astrometry
5338:Subdwarf B
5275:Host stars
5248:Retrograde
5143:Oort cloud
4981:Formation
4917:Mesoplanet
4841:Super-puff
4767:Mega-Earth
4746:Ice planet
4631:Definition
4616:Exoplanets
4554:Local Hole
4501:Gould Belt
4241:Oort cloud
4077:Formation,
4067:Deep space
3903:Vulcanoids
3820:Oort cloud
3744:first 1000
3680:Greek camp
3578:Meteoroids
3573:Damocloids
3519:Charikloan
2678:23 October
2610:5 November
2472:5 November
2436:19 October
2376:(1): L11.
2314:2311.12593
2016:Exoplanets
1840:1603.08614
1668:(1): 141.
1472:References
1461:Venus zone
1389:Ice planet
1383:Icy planet
1296:red dwarfs
1224:Kepler-99b
1220:Kepler-97b
1216:Kepler-93b
1212:Kepler-89b
1208:Kepler-78b
1204:Kepler 68c
1200:Kepler-48d
1196:Kepler-36b
1192:Kepler-20b
1188:Kepler-10b
1178:See also:
1114:Kepler-10b
1087:HD 85512 b
1059:Gliese 876
1004:Mega-Earth
998:See also:
287:icy planet
267:21 Lutetia
197:geologists
193:Earth-like
159:– Earth's
6699:solutions
6566:setiQuest
6561:SETI@home
6376:Mars 2020
6351:Laplace-P
6288:Dragonfly
6273:Curiosity
6154:Planetary
5719:2000–2009
5685:1501–2000
5680:1001–1500
5368:Detection
5333:Red giant
4993:Accretion
4985:evolution
4826:Ice giant
4821:Gas giant
4772:Sub-Earth
4661:Exoplanet
4515:Milky Way
4508:Orion Arm
4276:Formation
4261:Migration
4256:Disrupted
4124:Coatlicue
4092:Accretion
4079:evolution
4025:Asteroids
3937:astronomy
3932:Discovery
3793:Cubewanos
3714:Asteroids
3544:Quaoarian
3534:Neptunian
3524:Chironean
3509:Saturnian
3285:Enceladus
2829:256706529
2821:2397-3366
2768:135208562
2706:NASA, JPL
2577:8 January
2567:Space.com
2511:1311.6806
2410:221971000
2349:2 October
2235:1102.0541
2228:(1): 19.
2089:0906.2780
1867:119114880
1833:(1): 17.
1805:267546453
1789:1476-4687
1543:1308.0616
1427:chondrite
1411:Ganymede.
1300:Milky Way
1274:Frequency
1156:detection
1110:exoplanet
1096:Sizes of
810:Enceladus
497:The name
472:Enceladus
405:16 Psyche
306:volcanoes
302:mountains
289:instead.
238:Structure
6551:SERENDIP
6526:NIROSETI
6438:Viking 2
6431:Viking 1
6336:Foton-M3
6326:ExoLance
6257:Beagle 2
5675:501–1000
5655:Heaviest
5635:Extremes
5343:Subgiant
5216:Exocomet
4568:Universe
4406:Moonlets
3986:programs
3959:timeline
3947:timeline
3878:Planet X
3873:Planet V
3810:Sednoids
3798:Plutinos
3771:Centaurs
3749:families
3478:Dysnomia
3466:Xiangliu
3461:Gonggong
3449:Makemake
3408:Kerberos
3295:Hyperion
3233:Callisto
3228:Ganymede
3161:Gonggong
3156:Makemake
3011:Gonggong
3004:Makemake
2740:Elements
2710:Archived
2672:Archived
2634:Archived
2604:Archived
2571:Archived
2548:24191033
2466:Archived
2260:15233153
2171:Archived
2167:BBC News
2044:Archived
1892:Archived
1797:38326592
1742:30346215
1601:Archived
1497:1 August
1435:See also
1124:method.
787:Callisto
774:Ganymede
511:pressure
452:Callisto
448:Ganymede
271:2 Pallas
250:(mostly
220:hydrogen
113:silicate
6927:Science
6877:Portals
6415:Tanpopo
6311:ExoMars
6015:CTA-102
6007:CP 1919
5650:Largest
5645:Nearest
5348:T Tauri
5244:Orbits
5228:Exomoon
5208:Systems
4922:Planemo
4787:Gaseous
4389:Related
4368:by size
4057:Neptune
4042:Jupiter
3993:Mercury
3918:outline
3863:Phaeton
3858:Nemesis
3845:objects
3697:Neptune
3670:Jupiter
3650:Trojans
3643:Neptune
3628:Jupiter
3608:Mercury
3539:Haumean
3529:Uranian
3511: (
3425:Hiʻiaka
3359:Proteus
3349:Neptune
3337:Miranda
3327:Umbriel
3317:Titania
3305:all 146
3270:Iapetus
3223:Jupiter
3117:Neptune
3095:Jupiter
3063:Mercury
3045:Planets
2970:Neptune
2955:Jupiter
2928:Mercury
2791:Bibcode
2748:Bibcode
2719:19 July
2539:3845182
2516:Bibcode
2388:Bibcode
2284:27 July
2240:Bibcode
2205:9 March
2114:2983930
2094:Bibcode
2050:15 July
1845:Bibcode
1769:Bibcode
1733:6338575
1710:Bibcode
1670:Bibcode
1635:Bibcode
1570:Bibcode
1430:common.
1284:planets
1162:(named
1122:transit
903:Titania
893:Umbriel
870:Miranda
860:Iapetus
736:Object
727:(other
584:Mercury
560:Object
492:methane
484:Miranda
468:Iapetus
409:8 Flora
361:Mercury
310:erosive
298:craters
294:canyons
263:4 Vesta
137:Mercury
107:, is a
70:Mercury
6819:MERMOZ
6408:Spirit
6331:EXPOSE
6281:Darwin
6239:Tholin
5985:(2011)
5979:(2000)
5973:(1984)
5967:(1977)
5961:(1976)
5955:(1969)
5949:(1911)
5943:(1865)
5665:Kepler
5640:Firsts
5539:Tholin
5410:Timing
5328:Pulsar
5253:Trojan
4867:Blanet
4626:Planet
4563:
4556:
4549:
4524:
4517:
4510:
4503:
4496:
4489:
4482:
4411:Syzygy
4333:Comets
4266:System
4251:Planet
4144:EXCEDE
4052:Uranus
4047:Saturn
4037:Comets
4030:mining
4008:mining
3898:Vulcan
3739:active
3734:Hygiea
3729:Pallas
3692:Uranus
3638:Uranus
3633:Saturn
3568:Comets
3560:bodies
3558:System
3504:Jovian
3442:Weywot
3437:Quaoar
3430:Namaka
3420:Haumea
3393:Charon
3369:all 16
3364:Nereid
3354:Triton
3342:all 28
3322:Oberon
3312:Uranus
3300:Phoebe
3280:Tethys
3255:Saturn
3248:all 95
3243:Europa
3216:Deimos
3211:Phobos
3190:Earth
3151:Quaoar
3146:Haumea
3126:Dwarfs
3112:Uranus
3100:Saturn
3085:Giants
3050:dwarfs
2997:Quaoar
2990:Haumea
2965:Uranus
2960:Saturn
2827:
2819:
2766:
2546:
2536:
2408:
2279:Forbes
2258:
2112:
2022:
1997:
1972:
1924:
1865:
1803:
1795:
1787:
1761:Nature
1740:
1730:
1662:Icarus
1627:Icarus
1363:Hygiea
1044:fusion
1026:pulsar
1006:, and
985:
959:Quaoar
949:Charon
923:Triton
913:Oberon
820:Tethys
761:Hygiea
709:Europa
677:Pallas
499:Terran
464:Tethys
460:Triton
458:, and
417:M-type
413:S-type
377:Pallas
283:Europa
256:mantle
226:, and
224:helium
203:, and
189:Tellus
173:Pallas
169:Europa
121:metals
109:planet
6891:Stars
6410:rover
6397:rover
6389:rover
6319:rover
6275:rover
6070:Other
6027:Stars
5805:Other
5670:1–500
5595:Lists
4704:types
4699:Sizes
4326:Lists
4062:Pluto
4020:Ceres
3998:Venus
3893:Tyche
3888:Theia
3724:Vesta
3719:Ceres
3660:Earth
3655:Venus
3618:Earth
3613:Venus
3593:moons
3556:Solar
3554:Small
3513:Rhean
3498:Earth
3490:Rings
3403:Hydra
3388:Pluto
3381:Vanth
3376:Orcus
3332:Ariel
3290:Mimas
3275:Dione
3260:Titan
3183:Moons
3171:Sedna
3141:Pluto
3136:Orcus
3131:Ceres
3073:Earth
3068:Venus
3025:Sedna
2983:Pluto
2976:Orcus
2949:Ceres
2938:Earth
2933:Venus
2825:S2CID
2764:S2CID
2713:(PDF)
2702:(PDF)
2640:2 May
2506:arXiv
2406:S2CID
2378:arXiv
2309:arXiv
2256:S2CID
2230:arXiv
2121:(PDF)
2110:S2CID
2084:arXiv
2070:(PDF)
1948:(PDF)
1901:2 May
1895:(PDF)
1884:(PDF)
1863:S2CID
1835:arXiv
1801:S2CID
1538:arXiv
1491:(MP4)
1314:Types
1061:, 15
1038:When
979:67.9
966:43.7
943:39.5
936:Pluto
930:30.1
883:Ariel
877:19.2
850:Titan
830:Dione
804:9.54
797:Mimas
781:5.20
768:3.14
755:2.77
748:Ceres
703:5.20
687:2.77
671:2.36
661:Vesta
655:1.52
616:Earth
610:0.72
600:Venus
594:0.39
575:Mean
488:Ariel
480:Dione
476:Mimas
456:Titan
436:Pluto
432:Ceres
381:Vesta
369:Earth
365:Venus
321:outer
228:water
185:Terra
181:Latin
177:Vesta
145:Earth
141:Venus
117:rocks
103:, or
79:Earth
74:Venus
6101:BLC1
5794:2024
5789:2023
5784:2022
5779:2021
5774:2020
5769:2019
5764:2018
5759:2017
5754:2016
5749:2015
5744:2014
5739:2013
5734:2012
5729:2011
5724:2010
5439:list
5427:list
5415:list
5398:list
5386:list
4983:and
4701:and
4015:Mars
4003:Moon
3981:list
3964:list
3665:Mars
3623:Mars
3473:Eris
3413:Styx
3265:Rhea
3206:Mars
3194:Moon
3166:Eris
3078:Mars
3018:Eris
2943:Mars
2817:ISSN
2721:2021
2697:Dawn
2680:2013
2642:2018
2612:2013
2579:2013
2544:PMID
2474:2013
2438:2020
2351:2020
2286:2021
2207:2011
2148:2011
2052:2009
2020:ISBN
1995:ISBN
1970:ISBN
1922:ISBN
1903:2018
1793:PMID
1785:ISSN
1738:PMID
1609:2009
1499:2023
1294:and
1102:NASA
1053:and
976:2.4
972:Eris
963:1.7
953:1.7
940:1.9
927:2.1
917:1.6
907:1.7
897:1.5
887:1.6
874:1.2
864:1.1
854:1.9
844:1.2
840:Rhea
834:1.5
824:1.0
814:1.6
801:1.2
791:1.8
778:1.9
765:2.1
752:2.2
716:3.0
713:3.0
700:3.5
697:3.5
684:2.9
681:2.9
668:3.5
665:3.5
652:3.8
649:3.9
645:Mars
639:3.3
636:3.3
632:Moon
626:1.0
623:4.4
620:5.5
607:4.4
604:5.2
591:5.3
588:5.4
540:and
527:2.43
466:and
440:Eris
438:and
415:and
394:and
379:and
373:Mars
371:and
275:Moon
252:iron
248:core
187:and
175:and
161:Moon
149:Mars
147:and
83:Mars
81:and
72:and
4636:IAU
3754:PHA
3398:Nix
3107:Ice
3090:Gas
2923:Sun
2807:hdl
2799:doi
2756:doi
2534:PMC
2524:doi
2502:110
2396:doi
2374:903
2319:doi
2305:686
2248:doi
2226:736
2102:doi
2080:507
1853:doi
1831:834
1777:doi
1765:626
1728:PMC
1718:doi
1678:doi
1666:175
1643:doi
1578:doi
1306:).
1290:of
729:KBO
522:Sun
407:or
133:Sun
119:or
6941::
5692:K2
3515:?)
3238:Io
2823:.
2815:.
2805:.
2797:.
2785:.
2762:.
2754:.
2744:15
2742:.
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