Knowledge (XXG)

Ice giant

Source 📝

3066: 66: 43: 4540: 435: 179:. Lacking well-defined solid surfaces, they are primarily composed of gases and liquids. Their constituent compounds were solids when they were primarily incorporated into the planets during their formation, either directly in the form of ice or trapped in water ice. Today, very little of the water in Uranus and Neptune remains in the form of ice. Instead, water primarily exists as 4516: 379:, where mass moved by magnetic forces could pile up, eventually becoming marginally gravitationally unstable. A protoplanetary disk may simply accrete matter slowly, causing relatively short periods of marginal gravitational instability and bursts of mass collection, followed by periods where the surface density drops below what is required to sustain the instability. 1352:
Helbert, J.; Helled, R.; Hussmann, H.; Lamine, B.; Lämmerzahl, C.; Lamy, L.; Lehoucq, R.; Lenoir, B.; Levy, A.; Orton, G.; Páramos, J.; Poncy, J.; Postberg, F.; Progrebenko, S. V.; Reh, K. R.; Reynaud, S.; Robert, C.; Samain, E.; Saur, J; Sayanagi, K. M.; Schmitz, N.; Selig, H.; Sohl, F.; Spilker, T. R.; Srama, R.; Stephan, K.; Touboul, P.; Wolf, P. (8 July 2012).
3042: 3054: 4528: 4504: 371:
gravitational instability could yield protoplanets between 10 and 30 AU in over one thousand years (ka). This is much shorter than the 100,000 to 1,000,000 years required to produce protoplanets through core accretion of the cloud and could make it viable in even the shortest-lived disks, which exist for only a few million years.
3288: 529:, these are much smaller. They account for less than 20% of their mass. Their hydrogen also never reaches the depths necessary for the pressure to create metallic hydrogen. These envelopes nevertheless limit observation of the ice giants' interiors, and thereby the information on their composition and evolution. 374:
A problem with this model is determining what kept the disk stable before the instability. There are several possible mechanisms allowing gravitational instability to occur during disk evolution. A close encounter with another protostar could provide a gravitational kick to an otherwise stable disk.
638:
The magnetic fields of Uranus and Neptune are both unusually displaced and tilted. Their field strengths are intermediate between those of the gas giants and those of the terrestrial planets, being 50 and 25 times that of Earth's, respectively. The equatorial magnetic field strengths of Uranus and
1351:
Christophe, Bruno; Spilker, L. J.; Anderson, J. D.; André, N.; Asmar, S. W.; Aurnou, J.; Banfield, D.; Barucci, A.; Bertolami, O.; Bingham, R.; Brown, P; Cecconi, B.; Courty, J.-M.; Dittus, H.; Fletcher, L. N.; Foulon, B.; Francisco, F.; Gil, P. J. S.; Glassmeier, K. H.; Grundy, W.; Hansen, C.;
370:
Gravitational instability of the protoplanetary disk could also produce several gas giant protoplanets out to distances of up to 30 AU. Regions of slightly higher density in the disk could lead to the formation of clumps that eventually collapse to planetary densities. A disk with even marginal
605:
explaining the atmospheric features observed in the ice giants. Understanding these features will help elucidate how the atmospheres of giant planets in general function. Consequently, such insights could help scientists better predict the atmospheric structure and behaviour of giant
426:. Protoplanetary disks are present in both nebulae. Higher EUV fluxes make this an even more likely possibility for ice-giant formation. The stronger EUV would increase the removal of the gas envelopes from protoplanets before they could collapse sufficiently to resist further loss. 1483: 243:
came into use. In the early 1970s, the terminology became popular in the science fiction community, e.g., Bova (1971), but the earliest scientific usage of the terminology was likely by Dunne & Burgess (1978) in a NASA report.
4281: 4276: 4271: 357:
Considering the orbital challenges of protoplanets 20 AU or more from the centre of the Solar System would experience, a simple solution is that the ice giants formed between the orbits of Jupiter and Saturn before being
4266: 629:
In March 2012, it was found that the compressibility of water used in ice-giant models could be off by one-third. This value is important for modeling ice giants, and has a ripple effect on understanding them.
2969: 2543: 4261: 2939: 728: 4423: 2740: 4288: 411:
gas-giant protoplanets could have rapidly formed due to disk instability before having most of their hydrogen envelopes stripped off by intense EUV radiation from a nearby massive star.
586:, which has persisted for centuries. Of all known giant planets in the Solar System, Neptune emits the most internal heat per unit of absorbed sunlight, a ratio of approximately 2.6. 4315: 767:
D'Angelo, G.; Weidenschilling, S. J.; Lissauer, J. J.; Bodenheimer, P. (2021). "Growth of Jupiter: Formation in disks of gas and solids and evolution to the present epoch".
345:
Despite the trouble modelling their formation, many ice giant candidates have been observed orbiting other stars since 2004. This indicates that they may be common in the
567:
and they receive far less sunlight in their distant orbits than any other planets in the Solar System (increasing the relevance of internal heating on weather patterns).
4100: 4095: 4256: 3719: 2976: 639:
Neptune are respectively 75 percent and 45 percent of Earth's 0.305 gauss. Their magnetic fields are believed to originate in an ionized convecting fluid-ice mantle.
1217: 1353: 622:
Because of their large sizes and low thermal conductivities, the planetary interior pressures range up to several hundred GPa and temperatures of several thousand
4023: 2528: 3994: 3577: 2673: 1264: 1304: 544:
The gaseous outer layers of the ice giants have several similarities to those of the gas giants. These include long-lived, high-speed equatorial winds,
183:
at the temperatures and pressures within them. Uranus and Neptune consist of only about 20% hydrogen and helium by mass, compared to the Solar System's
4310: 3262: 2439: 1432: 996:
Lissauer, J. J.; Hubickyj, O.; D'Angelo, G.; Bodenheimer, P. (2009). "Models of Jupiter's growth incorporating thermal and hydrodynamic constraints".
860: 4293: 4130: 4463: 2594: 2239: 2224: 2204: 1463: 239:
altogether. Because during their formation Uranus and Neptune incorporated their material as either ice or gas trapped in water ice, the term
4438: 4390: 4385: 4380: 4375: 4370: 4365: 4360: 4355: 4350: 4345: 4340: 4335: 4330: 4325: 4320: 4011: 2538: 2271: 2234: 2229: 1079: 1095:
Levison, Harold F.; Kretke, Katherine A.; Duncan, Martin J. (2015). "Growing the gas-giant planets by the gradual accumulation of pebbles".
4120: 4110: 2964: 2555: 2276: 2214: 2209: 160:). In the 1990s, it was determined that Uranus and Neptune were a distinct class of giant planet, separate from the other giant planets, 4156: 4090: 3204: 3118: 2219: 4448: 4298: 4105: 3982: 1494: 506: 2340: 4481: 4115: 2367: 4176: 4166: 3654: 2755: 855: 4575: 4251: 4202: 4125: 4030: 4006: 3977: 3964: 3267: 1516: 1512: 1497: 924:, Scientific and Technical Information Division, National Aeronautics and Space Administration, 1978, 224 pages, page 2. 4207: 3844: 2934: 2350: 2184: 1506: 1238: 1052:
D'Angelo, Gennaro; Durisen, Richard H.; Lissauer, Jack J. (December 2010). "Giant Planet Formation". In Seager, Sara (ed.).
1505: 4433: 4080: 4035: 2459: 2355: 1503: 1500: 1496: 1492: 1318: 733: 682: 4494: 1214: 311:
have recently been proposed. Some extrasolar giant planets may instead have formed via gravitational disk instabilities.
4070: 2959: 2514: 2494: 2389: 1510: 1502: 1402: 1499: 342:
by the gas giants, would also have been likely to just be accreted into larger planets or thrown into cometary orbits.
4413: 4212: 3034: 2560: 2489: 2454: 1517: 1513: 1508: 614:) and exoplanets with masses and radii between that of the giant and terrestrial planets found in the Solar System. 4246: 4241: 4231: 3989: 3649: 2949: 2750: 2633: 2582: 1518: 1456: 339: 31: 4476: 4226: 3914: 3904: 3899: 3884: 3879: 3679: 3563: 2792: 2767: 2577: 594:
emits the least heat, one-tenth as much as Neptune. It is suspected that this may be related to its extreme 98˚
4236: 4181: 4042: 3849: 3829: 3589: 3232: 3083: 2688: 2283: 296: 1354:"OSS (Outer Solar System): a fundamental and planetary physics mission to Neptune, Triton and the Kuiper Belt" 1259: 598:. This causes its seasonal patterns to be very different from those of any other planet in the Solar System. 288:, and their extrasolar counterpart planets—are thought to have formed solid cores of around 10 Earth masses ( 4458: 4418: 4161: 4085: 3659: 3197: 2772: 2599: 2246: 2150: 2063: 1763: 1613: 396: 157: 1429: 4171: 4052: 3664: 3614: 2777: 2715: 2663: 2653: 2638: 2589: 2474: 2449: 2379: 1801: 1515: 900: 487: 156:, with freezing points of 273 K (0°C), 195 K (−78°C), and 91 K (−182°C), respectively (see 1493: 1487: 4560: 4140: 3784: 3684: 3518: 3143: 3070: 2944: 2797: 2760: 2648: 2643: 1449: 676: 553: 335: 1514: 65: 4428: 4408: 4018: 3689: 3604: 3300: 3227: 2705: 2658: 2616: 2315: 1773: 1738: 1733: 1627: 1578: 1551: 1378: 1273: 1186: 1114: 1067: 1015: 960: 786: 376: 261: 3859: 1511: 42: 4565: 4221: 3769: 3749: 3704: 3674: 3483: 3478: 3277: 3157: 3046: 2884: 2857: 2807: 2611: 2075: 1768: 1620: 939:"From Cold to Hot Irradiated Gaseous Exoplanets: Toward an Observation-based Classification Scheme" 846: 560: 536:
water-ammonia ocean beneath their clouds, which accounts for about two-thirds of their total mass.
533: 400: 392: 359: 273: 253: 180: 486:(by mass). Their hydrogen is thought to extend all the way down to their small rocky cores, where 4532: 4520: 3817: 3764: 3734: 3694: 3609: 3309: 3190: 3137: 3007: 2954: 2872: 2832: 2802: 2710: 2523: 1660: 1504: 1495: 1394: 1368: 1138: 1104: 1057: 1031: 1005: 978: 950: 925: 802: 776: 602: 204: 532:
Although Uranus and Neptune are referred to as ice giant planets, it is thought that there is a
1489: 140:
the term "ice" refers to volatile chemical compounds with freezing points above about 100 
4065: 3909: 3854: 3724: 3699: 3447: 3442: 3391: 3241: 2997: 2877: 2567: 2509: 2300: 2189: 2115: 2056: 2027: 1785: 1509: 1501: 1498: 1312: 1130: 1075: 748: 709: 668: 526: 491: 451: 331: 327: 137: 4453: 4443: 4191: 3871: 3804: 3754: 3644: 3634: 3558: 3488: 3473: 3272: 3058: 2862: 2852: 2745: 2720: 2130: 2100: 1971: 1951: 1850: 1825: 1665: 1530: 1386: 1281: 1194: 1122: 1023: 968: 794: 564: 549: 502: 404: 388: 334:. Such bodies crossing the orbits of Saturn or Jupiter would have been liable to be sent on 308: 1507: 1486: 1430:
Sandia experiments may force revision of astrophysical models of the universe - Sandia Labs
3934: 3729: 3629: 3553: 3543: 3322: 2929: 2827: 2735: 2626: 2604: 2401: 2345: 2335: 2125: 2105: 2080: 2068: 2022: 2010: 1944: 1914: 1907: 1897: 1857: 1835: 1830: 1490: 1488: 1436: 1221: 715: 611: 575: 323: 1239:
https://www.lpi.usra.edu/icegiants/mission_study/IceGiants_EGUPresentation_2017_04_24.pdf
1382: 1277: 1190: 1118: 1071: 1019: 964: 790: 4544: 3794: 3789: 3639: 3594: 3503: 2913: 2698: 2693: 2683: 2484: 2411: 2372: 2293: 2266: 1990: 1961: 1939: 1929: 1919: 1872: 1491: 579: 439: 4554: 3924: 3599: 3538: 3493: 3432: 3427: 3402: 3337: 3327: 3317: 3012: 2992: 2572: 2305: 2288: 2109: 2032: 1995: 1966: 1956: 1924: 1902: 1882: 1845: 1818: 1813: 1808: 982: 806: 703: 415: 1398: 1035: 4570: 4539: 4508: 4075: 4060: 3954: 3944: 3836: 3759: 3528: 3508: 3498: 3396: 3332: 3090: 3076: 2867: 2822: 2479: 2362: 2256: 2196: 2179: 2005: 1983: 1934: 1892: 1877: 1862: 1728: 1687: 1652: 1472: 1142: 738: 545: 471: 467: 434: 423: 408: 375:
A disk evolving magnetically is likely to have magnetic dead zones, due to varying
300: 269: 265: 236: 208: 133: 118: 90: 27:
Giant planet primarily consisting of compounds with freezing points exceeding 100°K
1027: 798: 4001: 3949: 3894: 3889: 3779: 3774: 3744: 3714: 3709: 3669: 3624: 3619: 3548: 3533: 3523: 3468: 3412: 3407: 3373: 3358: 3353: 3347: 3131: 3125: 2908: 2901: 2896: 2891: 2842: 2817: 2812: 2787: 2782: 2730: 2725: 2550: 2464: 2423: 2384: 2261: 2120: 2092: 2015: 1978: 1867: 743: 196: 17: 973: 938: 3972: 3739: 3513: 3437: 3363: 3342: 3150: 3097: 2837: 2416: 2000: 1390: 1337: 595: 495: 407:
suggests another possible mechanism for the formation of ice giants. Multiple-
578:. It forms and dissipates every few years, as opposed to the similarly sized 330:(AU) from the center of the Solar System would have been comparable to their 3929: 3919: 3417: 3383: 3368: 3257: 3111: 3104: 2533: 2499: 2330: 2251: 2174: 2169: 1887: 1840: 1692: 654: 607: 475: 346: 304: 277: 257: 184: 169: 53: 1134: 911:
Bova, B. 1971, The Many Worlds of Science Fiction (Boston, MA: E.P. Dutton)
187:, Jupiter and Saturn, which are more than 90% hydrogen and helium by mass. 466:
The ice giants represent one of two fundamentally different categories of
3939: 3812: 3164: 3002: 2621: 2469: 2325: 2310: 2051: 1758: 1606: 1286: 518: 479: 322:
through a similar process of core accretion is far more problematic. The
268:
are widely understood to have formed through collisional accumulation of
228: 110: 94: 1126: 3824: 2406: 2394: 2320: 1719: 1697: 1572: 1557: 881: 688: 583: 571: 559:
Studying the ice giants' atmospheric patterns also gives insights into
459: 443: 319: 281: 220: 216: 161: 153: 149: 126: 71: 4135: 3463: 3287: 3222: 2847: 2140: 2135: 2044: 2039: 1753: 1748: 1714: 1702: 1647: 1599: 1592: 1567: 1562: 694: 623: 591: 587: 522: 514: 510: 483: 455: 447: 438:
These cut-aways illustrate interior models of the giant planets. The
315: 285: 232: 224: 212: 165: 141: 122: 114: 106: 102: 98: 48: 4503: 1199: 1174: 1109: 955: 781: 2164: 1743: 1675: 1670: 1585: 1540: 1535: 1373: 1062: 1010: 433: 145: 1245:
NASA. Presented at the European Geophysical Union, 24 April 2017.
219:
have been understood to be significantly different from those of
1796: 1680: 1545: 672: 419: 3186: 1445: 1441: 1525: 30:
This article is about the type of planet. For other uses, see
3182: 1481: 1175:"Rapid Formation of Outer Giant Planets by Disk Instability" 1215:
NASA Completes Study of Future ‘Ice Giant’ Mission Concepts
922:
The Voyage of Mariner 10: Mission to Venus and Mercury
729:
List of gravitationally rounded objects of the Solar System
590:, the next-highest emitter, only has a ratio of about 1.8. 706:(proposed in 2015; under consideration by NASA as of 2018) 307:), although alternative models of core formation based on 4424:
Exoplanetary Circumstellar Environments and Disk Explorer
847:"The Atmospheres of the Ice Giants, Uranus and Neptune" 422:
are approximately 100 times higher than in Trapezium's
227:. They are primarily composed of elements heavier than 840: 838: 836: 4492: 834: 832: 830: 828: 826: 824: 822: 820: 818: 816: 211:. However, since the late 1940s the compositions of 4401: 4190: 4149: 4051: 3963: 3870: 3803: 3576: 3456: 3382: 3308: 3295: 3250: 2985: 2922: 2672: 2508: 2438: 2149: 2091: 1784: 1646: 1416:– via UCLA Simulated Planetary Interiors Lab. 525:are most likely. Although the ice giants also have 303:
over the course of a few to several million years (
175:As such, Neptune and Uranus are now referred to as 338:ejecting them from the system. Such bodies, being 4101:Habitability of K-type main-sequence star systems 4096:Habitability of F-type main-sequence star systems 1260:"Viewpoint: Seeing Deep Inside Icy Giant Planets" 1168: 1166: 1164: 1162: 1160: 1158: 1156: 1154: 1152: 1056:. University of Arizona Press. pp. 319–346. 610:discovered to be very close to their host stars ( 556:from above and mixing with the lower atmosphere. 501:The ice giants are primarily composed of heavier 3720:List of interstellar and circumstellar molecules 548:, large-scale circulation patterns, and complex 172:predominantly composed of hydrogen and helium. 1485: 685:(proposed in 2011; considered by NASA in 2017) 3198: 1457: 8: 1307:. Archived from the original on 2012-05-03. 494:under the extreme pressures of hundreds of 3305: 3205: 3191: 3183: 2435: 1643: 1639: 1464: 1450: 1442: 1338:"The Nature and Origin of Magnetic Fields" 474:, the other group being the more-familiar 362:outward to their now more distant orbits. 203:and it was used to refer to the large non- 3263:Exoplanet orbital and physical parameters 1372: 1285: 1253: 1251: 1198: 1108: 1061: 1047: 1045: 1009: 972: 954: 780: 93:composed mainly of elements heavier than 4131:List of potentially habitable exoplanets 2977:Interstellar and circumstellar molecules 1299: 1297: 454:, whereas the mantles of the ice giants 4499: 3173:) may be read as "within" or "part of". 2201:Planetary orbit-crossing minor planets 759: 563:. Their compositions promote different 299:gaseous envelopes from the surrounding 1332: 1330: 1328: 1310: 478:, which are composed of more than 90% 4439:Geodynamics of terrestrial exoplanets 891: 889: 700:Outer Solar System (proposed in 2012) 507:abundance of elements in the universe 7: 4121:Habitability of yellow dwarf systems 4111:Habitability of neutron star systems 1305:"The Interiors of Ice Giant Planets" 326:for the small protoplanets about 20 4464:Sudarsky's gas giant classification 4091:Habitability of binary star systems 895:Mark Marley, "Not a Heart of Ice", 4449:Nexus for Exoplanet System Science 4106:Habitability of natural satellites 295:) through the same process, while 260:is relatively straightforward and 117:. There are two ice giants in the 25: 4116:Habitability of red dwarf systems 1258:Nellis, William (February 2012). 920:James A. Dunne and Eric Burgess, 671:(proposed in 2012; considered by 462:are composed of heavier elements. 264:. The terrestrial planets of the 4538: 4526: 4514: 4502: 4213:Stars with proto-planetary discs 4177:NASA Star and Exoplanet Database 4167:Extrasolar Planets Encyclopaedia 3655:Extraterrestrial sample curation 3286: 3064: 3052: 3040: 856:Planetary Science Decadal Survey 450:are overlaid by a deep layer of 195:In 1952, science fiction writer 64: 41: 4126:Habitable zone for complex life 3564:Ultra-short period planet (USP) 3268:Methods of detecting exoplanets 2940:Gravitationally rounded objects 1173:Boss, Alan P. (December 2003). 570:The largest visible feature on 4307:Discovered exoplanets by year 937:Molaverdikhani, Karan (2019). 1: 4434:Extrasolar planets in fiction 4081:Extraterrestrial liquid water 1241:On to the Ice Giants]. (PDF) 734:Lists of astronomical objects 683:NASA Uranus orbiter and probe 235:, forming a separate type of 4454:Planets in globular clusters 4071:Circumstellar habitable zone 1028:10.1016/j.icarus.2008.10.004 861:US National Research Council 799:10.1016/j.icarus.2020.114087 601:There are still no complete 4414:Exoplanet naming convention 3524:Planet/Brown dwarf boundary 3035:Outline of the Solar System 2798:Interplanetary medium/space 880:Science Fiction Citations, 403:(EUV) radiation emitted by 252:Modelling the formation of 4592: 3650:Extraterrestrial materials 3284: 2751:Extraterrestrial materials 1243:Pre-Decadal study summary. 882:Citations for gas giant n. 32:Ice giant (disambiguation) 29: 4477:Discoveries of exoplanets 4472: 3680:Interplanetary dust cloud 3218: 3071:Earth sciences portal 3030: 2793:Interplanetary dust cloud 1637: 1479: 1391:10.1007/s10686-012-9309-y 1317:: CS1 maint: unfit URL ( 1179:The Astrophysical Journal 943:The Astrophysical Journal 845:Hofstadter, Mark (2011), 360:gravitationally scattered 4182:Open Exoplanet Catalogue 4157:Nearby Habitable Systems 4043:Transit-timing variation 3084:Local Interstellar Cloud 1802:other near-Earth objects 1367:(2). Springer: 203–242. 974:10.3847/1538-4357/aafda8 4459:Small planet radius gap 4162:Exoplanet Data Explorer 4086:Galactic habitable zone 3660:Giant-impact hypothesis 3047:Solar System portal 2773:Giant-impact hypothesis 2380:Trans-Neptunian objects 397:Orion Trapezium Cluster 336:hyperbolic trajectories 4576:Extraterrestrial water 4419:Exoplanet phase curves 4257:Terrestrial candidates 4208:Multiplanetary systems 4172:NASA Exoplanet Archive 3855:Mean-motion resonances 3665:Gravitational collapse 3615:Circumstellar envelope 2935:Possible dwarf planets 2778:Gravitational collapse 2716:Circumstellar envelope 1521: 1361:Experimental Astronomy 540:Atmosphere and weather 488:hydrogen molecular ion 463: 4294:Potentially habitable 4199:Exoplanetary systems 4141:Superhabitable planet 3900:F/Yellow-white dwarfs 3785:Sample-return mission 3685:Interplanetary medium 3144:Laniakea Supercluster 2761:Sample-return mission 1520: 897:The Planetary Society 643:Spacecraft visitation 554:ultraviolet radiation 437: 377:degrees of ionization 4429:Extragalactic planet 4409:Carl Sagan Institute 3690:Interplanetary space 3605:Circumplanetary disk 3278:Planet-hosting stars 3059:Astronomy portal 2960:Solar System objects 2706:Circumplanetary disk 1287:10.1103/Physics.5.25 854:White Paper for the 658:(Uranus and Neptune) 393:protoplanetary disks 3770:Protoplanetary disk 3750:Planetary migration 3705:Interstellar medium 3484:Circumtriple planet 3479:Circumbinary planet 3158:Observable universe 2955:Solar System models 2885:Protoplanetary disk 2808:Interstellar medium 2768:Frost/Ice/Snow line 1383:2012ExA....34..203C 1278:2012PhyOJ...5...25N 1191:2003ApJ...599..577B 1127:10.1038/nature14675 1119:2015Natur.524..322L 1072:2010exop.book..319D 1020:2009Icar..199..338L 965:2019ApJ...873...32M 791:2021Icar..35514087D 561:atmospheric physics 401:extreme ultraviolet 332:relative velocities 274:protoplanetary disk 205:terrestrial planets 181:supercritical fluid 3735:Nebular hypothesis 3710:Interstellar space 3695:Interstellar cloud 3675:Internal structure 3610:Circumstellar disc 3138:Virgo Supercluster 3119:Milky Way subgroup 2950:Natural satellites 2833:Nebular hypothesis 2813:Interstellar space 2803:Interstellar cloud 2711:Circumstellar disc 2301:Near-Earth objects 2185:names and meanings 1522: 1435:2013-11-06 at the 1220:2020-08-06 at the 718:(proposed in 2022) 712:(proposed in 2010) 697:(proposed in 2013) 691:(proposed in 2017) 565:chemical processes 550:chemical processes 527:hydrogen envelopes 464: 328:astronomical units 4490: 4489: 4066:Astrooceanography 3700:Interstellar dust 3572: 3571: 3448:Ultra-hot Neptune 3443:Ultra-hot Jupiter 3392:Eccentric Jupiter 3242:Planetary science 3180: 3179: 3025: 3024: 3021: 3020: 2998:Lagrangian points 2970:by discovery date 2568:Human spaceflight 2539:historical models 2432: 2431: 2057:S/2015 (136472) 1 1103:(7565): 322–324. 1081:978-0-8165-2945-2 749:MOA-2011-BLG-262L 710:Uranus Pathfinder 574:is the recurring 492:metallic hydrogen 452:metallic hydrogen 314:The formation of 138:planetary science 16:(Redirected from 4583: 4543: 4542: 4531: 4530: 4529: 4519: 4518: 4517: 4507: 4506: 4498: 4444:Neptunian desert 3830:Tidally detached 3765:Planet formation 3755:Planetary system 3645:Exozodiacal dust 3635:Disrupted planet 3559:Ultra-cool dwarf 3489:Disrupted planet 3474:Chthonian planet 3306: 3290: 3273:Planetary system 3207: 3200: 3193: 3184: 3174: 3172: 3163: 3156: 3149: 3142: 3136: 3130: 3124: 3117: 3110: 3103: 3096: 3089: 3082: 3069: 3068: 3067: 3057: 3056: 3055: 3045: 3044: 3043: 2746:Exozodiacal dust 2436: 2402:Detached objects 1644: 1640: 1484: 1466: 1459: 1452: 1443: 1418: 1417: 1415: 1413: 1407: 1401:. Archived from 1376: 1358: 1348: 1342: 1341: 1334: 1323: 1322: 1316: 1308: 1301: 1292: 1291: 1289: 1255: 1246: 1235: 1229: 1212: 1206: 1204: 1202: 1170: 1147: 1146: 1112: 1092: 1086: 1085: 1065: 1049: 1040: 1039: 1013: 993: 987: 986: 976: 958: 934: 928: 918: 912: 909: 903: 899:, 2 April 2019. 893: 884: 878: 872: 871: 870: 868: 851: 842: 811: 810: 784: 764: 612:pegasean planets 389:photoevaporation 387:Observations of 383:Photoevaporation 366:Disk instability 309:pebble accretion 199:coined the term 74:photographed by 68: 51:photographed by 45: 21: 18:Ice giant planet 4591: 4590: 4586: 4585: 4584: 4582: 4581: 4580: 4551: 4550: 4549: 4537: 4527: 4525: 4515: 4513: 4501: 4493: 4491: 4486: 4482:Search projects 4468: 4397: 4186: 4145: 4047: 4019:Radial velocity 3959: 3915:K/Orange dwarfs 3905:G/Yellow dwarfs 3866: 3860:Titius–Bode law 3799: 3730:Molecular cloud 3630:Detached object 3581: 3579: 3568: 3554:Toroidal planet 3544:Sub-brown dwarf 3452: 3378: 3350:(Super-Mercury) 3323:Coreless planet 3299: 3297: 3291: 3282: 3246: 3214: 3211: 3181: 3176: 3170: 3168: 3167: 3161: 3154: 3147: 3140: 3134: 3128: 3122: 3115: 3108: 3101: 3094: 3087: 3080: 3065: 3063: 3053: 3051: 3041: 3039: 3026: 3017: 2981: 2918: 2902:vs. Hill sphere 2828:Molecular cloud 2756:Sample curation 2736:Detached object 2675: 2668: 2512: 2504: 2441: 2428: 2373:Neptune trojans 2156: 2154: 2152: 2145: 2087: 1780: 1651: 1633: 1519: 1482: 1475: 1470: 1437:Wayback Machine 1426: 1421: 1411: 1409: 1405: 1356: 1350: 1349: 1345: 1336: 1335: 1326: 1309: 1303: 1302: 1295: 1257: 1256: 1249: 1236: 1232: 1228:. 20 June 2017. 1222:Wayback Machine 1213: 1209: 1172: 1171: 1150: 1094: 1093: 1089: 1082: 1051: 1050: 1043: 995: 994: 990: 936: 935: 931: 919: 915: 910: 906: 894: 887: 879: 875: 866: 864: 849: 844: 843: 814: 766: 765: 761: 757: 725: 716:Neptune Odyssey 665: 650: 645: 636: 634:Magnetic fields 620: 576:Great Dark Spot 542: 505:. Based on the 490:transitions to 470:present in the 440:planetary cores 432: 430:Characteristics 385: 368: 355: 324:escape velocity 294: 291: 262:uncontroversial 250: 193: 83: 82: 81: 80: 79: 69: 60: 59: 58: 57:in January 1986 46: 35: 28: 23: 22: 15: 12: 11: 5: 4589: 4587: 4579: 4578: 4573: 4568: 4563: 4553: 4552: 4548: 4547: 4535: 4523: 4511: 4488: 4487: 4485: 4484: 4479: 4473: 4470: 4469: 4467: 4466: 4461: 4456: 4451: 4446: 4441: 4436: 4431: 4426: 4421: 4416: 4411: 4405: 4403: 4399: 4398: 4396: 4395: 4394: 4393: 4388: 4383: 4378: 4373: 4368: 4363: 4358: 4353: 4348: 4343: 4338: 4333: 4328: 4323: 4318: 4313: 4304: 4303: 4302: 4301: 4296: 4291: 4286: 4285: 4284: 4279: 4274: 4269: 4259: 4254: 4249: 4244: 4239: 4234: 4229: 4218: 4217: 4216: 4215: 4210: 4205: 4196: 4194: 4188: 4187: 4185: 4184: 4179: 4174: 4169: 4164: 4159: 4153: 4151: 4147: 4146: 4144: 4143: 4138: 4133: 4128: 4123: 4118: 4113: 4108: 4103: 4098: 4093: 4088: 4083: 4078: 4073: 4068: 4063: 4057: 4055: 4049: 4048: 4046: 4045: 4040: 4039: 4038: 4031:Transit method 4028: 4027: 4026: 4016: 4015: 4014: 4004: 3999: 3998: 3997: 3987: 3986: 3985: 3978:Direct imaging 3975: 3969: 3967: 3961: 3960: 3958: 3957: 3952: 3947: 3942: 3937: 3932: 3927: 3922: 3917: 3912: 3907: 3902: 3897: 3892: 3887: 3882: 3876: 3874: 3868: 3867: 3865: 3864: 3863: 3862: 3857: 3852: 3847: 3839: 3834: 3833: 3832: 3822: 3821: 3820: 3809: 3807: 3801: 3800: 3798: 3797: 3795:Star formation 3792: 3790:Scattered disc 3787: 3782: 3777: 3772: 3767: 3762: 3757: 3752: 3747: 3742: 3737: 3732: 3727: 3722: 3717: 3712: 3707: 3702: 3697: 3692: 3687: 3682: 3677: 3672: 3667: 3662: 3657: 3652: 3647: 3642: 3640:Excretion disk 3637: 3632: 3627: 3622: 3617: 3612: 3607: 3602: 3597: 3595:Accretion disk 3592: 3586: 3584: 3574: 3573: 3570: 3569: 3567: 3566: 3561: 3556: 3551: 3546: 3541: 3536: 3531: 3526: 3521: 3516: 3511: 3506: 3504:Eyeball planet 3501: 3496: 3491: 3486: 3481: 3476: 3471: 3466: 3460: 3458: 3454: 3453: 3451: 3450: 3445: 3440: 3435: 3430: 3425: 3420: 3415: 3410: 3405: 3400: 3394: 3388: 3386: 3380: 3379: 3377: 3376: 3371: 3366: 3361: 3356: 3351: 3345: 3340: 3335: 3330: 3325: 3320: 3314: 3312: 3303: 3293: 3292: 3285: 3283: 3281: 3280: 3275: 3270: 3265: 3260: 3254: 3252: 3248: 3247: 3245: 3244: 3239: 3238: 3237: 3236: 3235: 3219: 3216: 3215: 3212: 3210: 3209: 3202: 3195: 3187: 3178: 3177: 3074: 3073: 3061: 3049: 3037: 3031: 3028: 3027: 3023: 3022: 3019: 3018: 3016: 3015: 3010: 3005: 3000: 2995: 2989: 2987: 2983: 2982: 2980: 2979: 2974: 2973: 2972: 2967: 2957: 2952: 2947: 2942: 2937: 2932: 2926: 2924: 2920: 2919: 2917: 2916: 2914:Scattered disc 2911: 2906: 2905: 2904: 2894: 2889: 2888: 2887: 2882: 2881: 2880: 2870: 2865: 2860: 2855: 2845: 2840: 2835: 2830: 2825: 2820: 2815: 2810: 2805: 2800: 2795: 2790: 2785: 2780: 2775: 2770: 2765: 2764: 2763: 2758: 2748: 2743: 2738: 2733: 2728: 2723: 2718: 2713: 2708: 2703: 2702: 2701: 2699:Excretion disk 2694:Accretion disk 2691: 2686: 2684:Star formation 2680: 2678: 2670: 2669: 2667: 2666: 2661: 2656: 2651: 2646: 2641: 2636: 2631: 2630: 2629: 2619: 2614: 2609: 2608: 2607: 2597: 2592: 2587: 2586: 2585: 2580: 2575: 2573:space stations 2565: 2564: 2563: 2558: 2548: 2547: 2546: 2541: 2536: 2526: 2520: 2518: 2506: 2505: 2503: 2502: 2497: 2492: 2487: 2482: 2477: 2472: 2467: 2462: 2457: 2452: 2446: 2444: 2433: 2430: 2429: 2427: 2426: 2421: 2420: 2419: 2414: 2412:Scattered disc 2409: 2404: 2399: 2398: 2397: 2392: 2377: 2376: 2375: 2370: 2360: 2359: 2358: 2353: 2348: 2343: 2338: 2333: 2328: 2323: 2318: 2308: 2303: 2298: 2297: 2296: 2291: 2286: 2281: 2280: 2279: 2274: 2264: 2259: 2254: 2244: 2243: 2242: 2237: 2232: 2227: 2222: 2217: 2212: 2207: 2199: 2194: 2193: 2192: 2187: 2177: 2172: 2167: 2161: 2159: 2147: 2146: 2144: 2143: 2138: 2133: 2128: 2123: 2118: 2113: 2103: 2097: 2095: 2089: 2088: 2086: 2085: 2084: 2083: 2073: 2072: 2071: 2061: 2060: 2059: 2049: 2048: 2047: 2037: 2036: 2035: 2030: 2020: 2019: 2018: 2013: 2008: 2003: 1998: 1988: 1987: 1986: 1976: 1975: 1974: 1969: 1964: 1959: 1949: 1948: 1947: 1942: 1937: 1932: 1927: 1922: 1912: 1911: 1910: 1905: 1900: 1895: 1890: 1885: 1880: 1875: 1870: 1865: 1855: 1854: 1853: 1848: 1843: 1838: 1833: 1823: 1822: 1821: 1816: 1806: 1805: 1804: 1799: 1790: 1788: 1782: 1781: 1779: 1778: 1777: 1776: 1771: 1766: 1761: 1756: 1751: 1746: 1741: 1736: 1726: 1725: 1724: 1723: 1722: 1717: 1707: 1706: 1705: 1700: 1685: 1684: 1683: 1678: 1673: 1668: 1657: 1655: 1638: 1635: 1634: 1632: 1631: 1624: 1617: 1610: 1603: 1596: 1589: 1582: 1575: 1570: 1565: 1560: 1555: 1548: 1543: 1538: 1533: 1528: 1480: 1477: 1476: 1471: 1469: 1468: 1461: 1454: 1446: 1440: 1439: 1425: 1424:External links 1422: 1420: 1419: 1408:on 26 May 2019 1343: 1324: 1293: 1247: 1230: 1207: 1200:10.1086/379163 1185:(1): 577–581. 1148: 1087: 1080: 1041: 1004:(2): 338–350. 988: 929: 913: 904: 885: 873: 863:, pp. 1–2 812: 758: 756: 753: 752: 751: 746: 741: 736: 731: 724: 721: 720: 719: 713: 707: 701: 698: 692: 686: 680: 664: 661: 660: 659: 649: 646: 644: 641: 635: 632: 619: 616: 580:Great Red Spot 546:polar vortices 541: 538: 442:of gas giants 431: 428: 384: 381: 367: 364: 354: 351: 292: 289: 249: 246: 192: 189: 78:in August 1989 70: 63: 62: 61: 47: 40: 39: 38: 37: 36: 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 4588: 4577: 4574: 4572: 4569: 4567: 4564: 4562: 4559: 4558: 4556: 4546: 4541: 4536: 4534: 4524: 4522: 4512: 4510: 4505: 4500: 4496: 4483: 4480: 4478: 4475: 4474: 4471: 4465: 4462: 4460: 4457: 4455: 4452: 4450: 4447: 4445: 4442: 4440: 4437: 4435: 4432: 4430: 4427: 4425: 4422: 4420: 4417: 4415: 4412: 4410: 4407: 4406: 4404: 4400: 4392: 4389: 4387: 4384: 4382: 4379: 4377: 4374: 4372: 4369: 4367: 4364: 4362: 4359: 4357: 4354: 4352: 4349: 4347: 4344: 4342: 4339: 4337: 4334: 4332: 4329: 4327: 4324: 4322: 4319: 4317: 4314: 4312: 4309: 4308: 4306: 4305: 4300: 4297: 4295: 4292: 4290: 4287: 4283: 4280: 4278: 4275: 4273: 4270: 4268: 4265: 4264: 4263: 4260: 4258: 4255: 4253: 4250: 4248: 4245: 4243: 4240: 4238: 4235: 4233: 4230: 4228: 4225: 4224: 4223: 4220: 4219: 4214: 4211: 4209: 4206: 4204: 4201: 4200: 4198: 4197: 4195: 4193: 4189: 4183: 4180: 4178: 4175: 4173: 4170: 4168: 4165: 4163: 4160: 4158: 4155: 4154: 4152: 4148: 4142: 4139: 4137: 4134: 4132: 4129: 4127: 4124: 4122: 4119: 4117: 4114: 4112: 4109: 4107: 4104: 4102: 4099: 4097: 4094: 4092: 4089: 4087: 4084: 4082: 4079: 4077: 4074: 4072: 4069: 4067: 4064: 4062: 4059: 4058: 4056: 4054: 4050: 4044: 4041: 4037: 4034: 4033: 4032: 4029: 4025: 4022: 4021: 4020: 4017: 4013: 4010: 4009: 4008: 4005: 4003: 4000: 3996: 3993: 3992: 3991: 3988: 3984: 3981: 3980: 3979: 3976: 3974: 3971: 3970: 3968: 3966: 3962: 3956: 3955:Yellow giants 3953: 3951: 3948: 3946: 3943: 3941: 3938: 3936: 3933: 3931: 3928: 3926: 3923: 3921: 3918: 3916: 3913: 3911: 3908: 3906: 3903: 3901: 3898: 3896: 3893: 3891: 3888: 3886: 3883: 3881: 3878: 3877: 3875: 3873: 3869: 3861: 3858: 3856: 3853: 3851: 3848: 3846: 3843: 3842: 3840: 3838: 3835: 3831: 3828: 3827: 3826: 3823: 3819: 3816: 3815: 3814: 3811: 3810: 3808: 3806: 3802: 3796: 3793: 3791: 3788: 3786: 3783: 3781: 3778: 3776: 3773: 3771: 3768: 3766: 3763: 3761: 3758: 3756: 3753: 3751: 3748: 3746: 3743: 3741: 3738: 3736: 3733: 3731: 3728: 3726: 3725:Merging stars 3723: 3721: 3718: 3716: 3713: 3711: 3708: 3706: 3703: 3701: 3698: 3696: 3693: 3691: 3688: 3686: 3683: 3681: 3678: 3676: 3673: 3671: 3668: 3666: 3663: 3661: 3658: 3656: 3653: 3651: 3648: 3646: 3643: 3641: 3638: 3636: 3633: 3631: 3628: 3626: 3623: 3621: 3618: 3616: 3613: 3611: 3608: 3606: 3603: 3601: 3600:Asteroid belt 3598: 3596: 3593: 3591: 3588: 3587: 3585: 3583: 3575: 3565: 3562: 3560: 3557: 3555: 3552: 3550: 3547: 3545: 3542: 3540: 3539:Pulsar planet 3537: 3535: 3532: 3530: 3527: 3525: 3522: 3520: 3517: 3515: 3512: 3510: 3507: 3505: 3502: 3500: 3497: 3495: 3494:Double planet 3492: 3490: 3487: 3485: 3482: 3480: 3477: 3475: 3472: 3470: 3467: 3465: 3462: 3461: 3459: 3455: 3449: 3446: 3444: 3441: 3439: 3436: 3434: 3433:Super-Neptune 3431: 3429: 3428:Super-Jupiter 3426: 3424: 3421: 3419: 3416: 3414: 3411: 3409: 3406: 3404: 3403:Helium planet 3401: 3398: 3395: 3393: 3390: 3389: 3387: 3385: 3381: 3375: 3372: 3370: 3367: 3365: 3362: 3360: 3357: 3355: 3352: 3349: 3346: 3344: 3341: 3339: 3338:Hycean planet 3336: 3334: 3331: 3329: 3328:Desert planet 3326: 3324: 3321: 3319: 3318:Carbon planet 3316: 3315: 3313: 3311: 3307: 3304: 3302: 3294: 3289: 3279: 3276: 3274: 3271: 3269: 3266: 3264: 3261: 3259: 3256: 3255: 3253: 3249: 3243: 3240: 3234: 3231: 3230: 3229: 3226: 3225: 3224: 3221: 3220: 3217: 3208: 3203: 3201: 3196: 3194: 3189: 3188: 3185: 3175: 3166: 3159: 3152: 3145: 3139: 3133: 3127: 3120: 3113: 3106: 3099: 3092: 3085: 3078: 3072: 3062: 3060: 3050: 3048: 3038: 3036: 3033: 3032: 3029: 3014: 3013:Tidal locking 3011: 3009: 3006: 3004: 3001: 2999: 2996: 2994: 2993:Double planet 2991: 2990: 2988: 2984: 2978: 2975: 2971: 2968: 2966: 2963: 2962: 2961: 2958: 2956: 2953: 2951: 2948: 2946: 2945:Minor planets 2943: 2941: 2938: 2936: 2933: 2931: 2928: 2927: 2925: 2921: 2915: 2912: 2910: 2907: 2903: 2900: 2899: 2898: 2895: 2893: 2890: 2886: 2883: 2879: 2878:Merging stars 2876: 2875: 2874: 2871: 2869: 2866: 2864: 2861: 2859: 2856: 2854: 2851: 2850: 2849: 2846: 2844: 2841: 2839: 2836: 2834: 2831: 2829: 2826: 2824: 2821: 2819: 2816: 2814: 2811: 2809: 2806: 2804: 2801: 2799: 2796: 2794: 2791: 2789: 2786: 2784: 2781: 2779: 2776: 2774: 2771: 2769: 2766: 2762: 2759: 2757: 2754: 2753: 2752: 2749: 2747: 2744: 2742: 2739: 2737: 2734: 2732: 2729: 2727: 2724: 2722: 2719: 2717: 2714: 2712: 2709: 2707: 2704: 2700: 2697: 2696: 2695: 2692: 2690: 2687: 2685: 2682: 2681: 2679: 2677: 2671: 2665: 2662: 2660: 2657: 2655: 2652: 2650: 2647: 2645: 2642: 2640: 2637: 2635: 2632: 2628: 2625: 2624: 2623: 2620: 2618: 2615: 2613: 2610: 2606: 2603: 2602: 2601: 2598: 2596: 2593: 2591: 2588: 2584: 2581: 2579: 2576: 2574: 2571: 2570: 2569: 2566: 2562: 2559: 2557: 2554: 2553: 2552: 2549: 2545: 2542: 2540: 2537: 2535: 2532: 2531: 2530: 2527: 2525: 2522: 2521: 2519: 2516: 2511: 2507: 2501: 2498: 2496: 2493: 2491: 2488: 2486: 2483: 2481: 2480:Subsatellites 2478: 2476: 2473: 2471: 2468: 2466: 2463: 2461: 2458: 2456: 2453: 2451: 2448: 2447: 2445: 2443: 2440:Hypothetical 2437: 2434: 2425: 2422: 2418: 2415: 2413: 2410: 2408: 2405: 2403: 2400: 2396: 2393: 2391: 2388: 2387: 2386: 2383: 2382: 2381: 2378: 2374: 2371: 2369: 2366: 2365: 2364: 2361: 2357: 2354: 2352: 2349: 2347: 2344: 2342: 2339: 2337: 2334: 2332: 2329: 2327: 2324: 2322: 2319: 2317: 2314: 2313: 2312: 2309: 2307: 2306:Asteroid belt 2304: 2302: 2299: 2295: 2292: 2290: 2287: 2285: 2282: 2278: 2275: 2273: 2270: 2269: 2268: 2265: 2263: 2260: 2258: 2255: 2253: 2250: 2249: 2248: 2245: 2241: 2238: 2236: 2233: 2231: 2228: 2226: 2223: 2221: 2218: 2216: 2213: 2211: 2208: 2206: 2203: 2202: 2200: 2198: 2195: 2191: 2188: 2186: 2183: 2182: 2181: 2180:Minor planets 2178: 2176: 2173: 2171: 2168: 2166: 2163: 2162: 2160: 2158: 2148: 2142: 2139: 2137: 2134: 2132: 2129: 2127: 2124: 2122: 2119: 2117: 2114: 2111: 2107: 2104: 2102: 2099: 2098: 2096: 2094: 2090: 2082: 2079: 2078: 2077: 2074: 2070: 2067: 2066: 2065: 2062: 2058: 2055: 2054: 2053: 2050: 2046: 2043: 2042: 2041: 2038: 2034: 2031: 2029: 2026: 2025: 2024: 2021: 2017: 2014: 2012: 2009: 2007: 2004: 2002: 1999: 1997: 1994: 1993: 1992: 1989: 1985: 1982: 1981: 1980: 1977: 1973: 1970: 1968: 1965: 1963: 1960: 1958: 1955: 1954: 1953: 1950: 1946: 1943: 1941: 1938: 1936: 1933: 1931: 1928: 1926: 1923: 1921: 1918: 1917: 1916: 1913: 1909: 1906: 1904: 1901: 1899: 1896: 1894: 1891: 1889: 1886: 1884: 1881: 1879: 1876: 1874: 1871: 1869: 1866: 1864: 1861: 1860: 1859: 1856: 1852: 1849: 1847: 1844: 1842: 1839: 1837: 1834: 1832: 1829: 1828: 1827: 1824: 1820: 1817: 1815: 1812: 1811: 1810: 1807: 1803: 1800: 1798: 1795: 1794: 1792: 1791: 1789: 1787: 1783: 1775: 1772: 1770: 1767: 1765: 1762: 1760: 1757: 1755: 1752: 1750: 1747: 1745: 1742: 1740: 1737: 1735: 1732: 1731: 1730: 1727: 1721: 1718: 1716: 1713: 1712: 1711: 1708: 1704: 1701: 1699: 1696: 1695: 1694: 1691: 1690: 1689: 1686: 1682: 1679: 1677: 1674: 1672: 1669: 1667: 1664: 1663: 1662: 1659: 1658: 1656: 1654: 1649: 1645: 1642: 1641: 1636: 1630: 1629: 1625: 1623: 1622: 1618: 1616: 1615: 1611: 1609: 1608: 1604: 1602: 1601: 1597: 1595: 1594: 1590: 1588: 1587: 1583: 1581: 1580: 1576: 1574: 1571: 1569: 1566: 1564: 1561: 1559: 1556: 1554: 1553: 1549: 1547: 1544: 1542: 1539: 1537: 1534: 1532: 1529: 1527: 1524: 1523: 1478: 1474: 1467: 1462: 1460: 1455: 1453: 1448: 1447: 1444: 1438: 1434: 1431: 1428: 1427: 1423: 1404: 1400: 1396: 1392: 1388: 1384: 1380: 1375: 1370: 1366: 1362: 1355: 1347: 1344: 1339: 1333: 1331: 1329: 1325: 1320: 1314: 1306: 1300: 1298: 1294: 1288: 1283: 1279: 1275: 1271: 1267: 1266: 1261: 1254: 1252: 1248: 1244: 1240: 1234: 1231: 1227: 1223: 1219: 1216: 1211: 1208: 1201: 1196: 1192: 1188: 1184: 1180: 1176: 1169: 1167: 1165: 1163: 1161: 1159: 1157: 1155: 1153: 1149: 1144: 1140: 1136: 1132: 1128: 1124: 1120: 1116: 1111: 1106: 1102: 1098: 1091: 1088: 1083: 1077: 1073: 1069: 1064: 1059: 1055: 1048: 1046: 1042: 1037: 1033: 1029: 1025: 1021: 1017: 1012: 1007: 1003: 999: 992: 989: 984: 980: 975: 970: 966: 962: 957: 952: 948: 944: 940: 933: 930: 927: 923: 917: 914: 908: 905: 902: 898: 892: 890: 886: 883: 877: 874: 862: 858: 857: 848: 841: 839: 837: 835: 833: 831: 829: 827: 825: 823: 821: 819: 817: 813: 808: 804: 800: 796: 792: 788: 783: 778: 774: 770: 763: 760: 754: 750: 747: 745: 742: 740: 737: 735: 732: 730: 727: 726: 722: 717: 714: 711: 708: 705: 704:Triton Hopper 702: 699: 696: 693: 690: 687: 684: 681: 678: 674: 670: 667: 666: 662: 657: 656: 652: 651: 647: 642: 640: 633: 631: 627: 625: 617: 615: 613: 609: 604: 599: 597: 593: 589: 585: 581: 577: 573: 568: 566: 562: 557: 555: 551: 547: 539: 537: 535: 534:supercritical 530: 528: 524: 520: 516: 512: 508: 504: 499: 497: 493: 489: 485: 481: 477: 473: 469: 468:giant planets 461: 457: 453: 449: 445: 441: 436: 429: 427: 425: 421: 417: 416:Carina Nebula 412: 410: 406: 402: 398: 394: 390: 382: 380: 378: 372: 365: 363: 361: 352: 350: 348: 343: 341: 337: 333: 329: 325: 321: 317: 312: 310: 306: 302: 298: 287: 283: 279: 275: 271: 270:planetesimals 267: 263: 259: 255: 247: 245: 242: 238: 234: 230: 226: 222: 218: 214: 210: 206: 202: 198: 190: 188: 186: 182: 178: 173: 171: 167: 163: 159: 155: 151: 147: 143: 139: 135: 130: 128: 124: 120: 116: 112: 108: 104: 100: 96: 92: 88: 77: 73: 67: 56: 55: 50: 44: 33: 19: 4561:Solar System 4299:Proper names 4076:Earth analog 4061:Astrobiology 4053:Habitability 3990:Microlensing 3950:White dwarfs 3920:M/Red dwarfs 3910:Herbig Ae/Be 3895:Brown dwarfs 3837:Rogue planet 3818:Interstellar 3760:Planetesimal 3529:Planetesimal 3509:Giant planet 3499:Ecumenopolis 3422: 3397:Mini-Neptune 3333:Dwarf planet 3169:Each arrow ( 3091:Local Bubble 3077:Solar System 3075: 2868:Planetesimal 2823:Kuiper cliff 2551:Space probes 2524:Colonization 2363:Kirkwood gap 2284:Saturn Moons 2197:Planetesimal 1709: 1661:Terrestrials 1626: 1619: 1612: 1605: 1598: 1591: 1584: 1577: 1550: 1473:Solar System 1410:. Retrieved 1403:the original 1364: 1360: 1346: 1269: 1263: 1242: 1233: 1225: 1210: 1182: 1178: 1100: 1096: 1090: 1053: 1001: 997: 991: 946: 942: 932: 921: 916: 907: 896: 876: 865:, retrieved 853: 772: 768: 762: 739:Mini-Neptune 675:in 2014 and 653: 637: 628: 621: 600: 569: 558: 543: 531: 500: 472:Solar System 465: 424:Orion Nebula 413: 409:Jupiter-mass 386: 373: 369: 356: 344: 313: 301:solar nebula 266:Solar System 251: 240: 237:giant planet 209:Solar System 200: 194: 176: 174: 168:, which are 134:astrophysics 131: 119:Solar System 91:giant planet 86: 84: 75: 52: 4533:Outer space 4521:Spaceflight 4311:before 2000 4227:Discoveries 4002:Polarimetry 3890:Binary star 3780:Rubble pile 3775:Ring system 3745:Outer space 3715:Kuiper belt 3670:Hills cloud 3625:Debris disk 3620:Cosmic dust 3549:Sub-Neptune 3534:Protoplanet 3469:Brown dwarf 3457:Other types 3413:Hot Neptune 3408:Hot Jupiter 3399:(Gas dwarf) 3374:Super-Earth 3359:Ocean world 3354:Lava planet 3348:Iron planet 3310:Terrestrial 3251:Main topics 3132:Local Sheet 3126:Local Group 2909:Rubble pile 2897:Roche limit 2892:Ring system 2843:Outer space 2818:Kuiper belt 2788:Hill sphere 2783:Hills cloud 2731:Debris disk 2726:Cosmic dust 2510:Exploration 2465:Planet Nine 2450:Fifth giant 2424:Hills cloud 2385:Kuiper belt 2356:exceptional 2272:Trojan camp 744:Planet Nine 496:gigapascals 405:θ Orionis C 272:within the 254:terrestrial 197:James Blish 191:Terminology 4566:Ice giants 4555:Categories 4222:Exoplanets 4203:Host stars 4150:Catalogues 3973:Astrometry 3935:Subdwarf B 3872:Host stars 3845:Retrograde 3740:Oort cloud 3578:Formation 3514:Mesoplanet 3438:Super-puff 3364:Mega-Earth 3343:Ice planet 3228:Definition 3213:Exoplanets 3151:Local Hole 3098:Gould Belt 2838:Oort cloud 2674:Formation, 2664:Deep space 2500:Vulcanoids 2417:Oort cloud 2341:first 1000 2277:Greek camp 2175:Meteoroids 2170:Damocloids 2116:Charikloan 1272:(25): 25. 1110:1510.02094 1054:Exoplanets 956:1809.09629 867:18 January 782:2009.05575 775:: 114087. 755:References 608:exoplanets 596:axial tilt 552:driven by 476:gas giants 278:gas giants 258:gas giants 185:gas giants 177:ice giants 170:gas giants 144:, such as 101:, such as 4316:2000–2009 4282:1501–2000 4277:1001–1500 3965:Detection 3930:Red giant 3590:Accretion 3582:evolution 3423:Ice giant 3418:Gas giant 3369:Sub-Earth 3258:Exoplanet 3112:Milky Way 3105:Orion Arm 2873:Formation 2858:Migration 2853:Disrupted 2721:Coatlicue 2689:Accretion 2676:evolution 2622:Asteroids 2534:astronomy 2529:Discovery 2390:Cubewanos 2311:Asteroids 2141:Quaoarian 2131:Neptunian 2121:Chironean 2106:Saturnian 1888:Enceladus 1374:1106.0132 1063:1006.5486 1011:0810.5186 983:119357572 949:(1): 32. 807:221654962 663:Proposals 655:Voyager 2 353:Migration 347:Milky Way 297:accreting 248:Formation 241:ice giant 201:gas giant 158:Volatiles 87:ice giant 76:Voyager 2 54:Voyager 2 4272:501–1000 4252:Heaviest 4232:Extremes 3940:Subgiant 3813:Exocomet 3165:Universe 3003:Moonlets 2583:programs 2556:timeline 2544:timeline 2475:Planet X 2470:Planet V 2407:Sednoids 2395:Plutinos 2368:Centaurs 2346:families 2081:Dysnomia 2069:Xiangliu 2064:Gonggong 2052:Makemake 2011:Kerberos 1898:Hyperion 1836:Callisto 1831:Ganymede 1764:Gonggong 1759:Makemake 1614:Gonggong 1607:Makemake 1433:Archived 1399:55295857 1313:cite web 1218:Archived 1135:26289203 1036:18964068 723:See also 679:in 2016) 618:Interior 519:nitrogen 503:elements 480:hydrogen 340:swept up 229:hydrogen 111:nitrogen 95:hydrogen 4545:Science 4495:Portals 4247:Largest 4242:Nearest 3945:T Tauri 3841:Orbits 3825:Exomoon 3805:Systems 3519:Planemo 3384:Gaseous 2986:Related 2965:by size 2654:Neptune 2639:Jupiter 2590:Mercury 2515:outline 2460:Phaeton 2455:Nemesis 2442:objects 2294:Neptune 2267:Jupiter 2247:Trojans 2240:Neptune 2225:Jupiter 2205:Mercury 2136:Haumean 2126:Uranian 2108: ( 2028:Hiʻiaka 1962:Proteus 1952:Neptune 1940:Miranda 1930:Umbriel 1920:Titania 1908:all 146 1873:Iapetus 1826:Jupiter 1720:Neptune 1698:Jupiter 1666:Mercury 1648:Planets 1573:Neptune 1558:Jupiter 1531:Mercury 1379:Bibcode 1274:Bibcode 1265:Physics 1226:NASA TV 1187:Bibcode 1143:4458098 1115:Bibcode 1068:Bibcode 1016:Bibcode 961:Bibcode 787:Bibcode 689:OCEANUS 624:kelvins 584:Jupiter 572:Neptune 498:(GPa). 460:Neptune 444:Jupiter 414:In the 395:in the 320:Neptune 282:Jupiter 221:Jupiter 217:Neptune 207:of the 162:Jupiter 154:methane 150:ammonia 127:Neptune 72:Neptune 4262:Kepler 4237:Firsts 4136:Tholin 4007:Timing 3925:Pulsar 3850:Trojan 3464:Blanet 3223:Planet 3160:  3153:  3146:  3121:  3114:  3107:  3100:  3093:  3086:  3079:  3008:Syzygy 2930:Comets 2863:System 2848:Planet 2741:EXCEDE 2649:Uranus 2644:Saturn 2634:Comets 2627:mining 2605:mining 2495:Vulcan 2336:active 2331:Hygiea 2326:Pallas 2289:Uranus 2235:Uranus 2230:Saturn 2165:Comets 2157:bodies 2155:System 2101:Jovian 2045:Weywot 2040:Quaoar 2033:Namaka 2023:Haumea 1996:Charon 1972:all 16 1967:Nereid 1957:Triton 1945:all 28 1925:Oberon 1915:Uranus 1903:Phoebe 1883:Tethys 1858:Saturn 1851:all 95 1846:Europa 1819:Deimos 1814:Phobos 1793:Earth 1754:Quaoar 1749:Haumea 1729:Dwarfs 1715:Uranus 1703:Saturn 1688:Giants 1653:dwarfs 1600:Quaoar 1593:Haumea 1568:Uranus 1563:Saturn 1412:26 May 1397:  1205:, §1–2 1141:  1133:  1097:Nature 1078:  1034:  998:Icarus 981:  805:  769:Icarus 695:ODINUS 603:models 592:Uranus 588:Saturn 523:sulfur 521:, and 515:carbon 511:oxygen 484:helium 456:Uranus 448:Saturn 420:fluxes 418:, EUV 316:Uranus 286:Saturn 276:. The 233:helium 225:Saturn 213:Uranus 166:Saturn 123:Uranus 115:sulfur 113:, and 107:carbon 103:oxygen 99:helium 49:Uranus 4509:Stars 4402:Other 4267:1–500 4192:Lists 3301:types 3296:Sizes 2923:Lists 2659:Pluto 2617:Ceres 2595:Venus 2490:Tyche 2485:Theia 2321:Vesta 2316:Ceres 2257:Earth 2252:Venus 2215:Earth 2210:Venus 2190:moons 2153:Solar 2151:Small 2110:Rhean 2093:Rings 2006:Hydra 1991:Pluto 1984:Vanth 1979:Orcus 1935:Ariel 1893:Mimas 1878:Dione 1863:Titan 1786:Moons 1774:Sedna 1744:Pluto 1739:Orcus 1734:Ceres 1676:Earth 1671:Venus 1628:Sedna 1586:Pluto 1579:Orcus 1552:Ceres 1541:Earth 1536:Venus 1406:(PDF) 1395:S2CID 1369:arXiv 1357:(PDF) 1139:S2CID 1105:arXiv 1058:arXiv 1032:S2CID 1006:arXiv 979:S2CID 951:arXiv 850:(PDF) 803:S2CID 777:arXiv 626:(K). 152:, or 146:water 89:is a 4391:2024 4386:2023 4381:2022 4376:2021 4371:2020 4366:2019 4361:2018 4356:2017 4351:2016 4346:2015 4341:2014 4336:2013 4331:2012 4326:2011 4321:2010 4036:list 4024:list 4012:list 3995:list 3983:list 3580:and 3298:and 2612:Mars 2600:Moon 2578:list 2561:list 2262:Mars 2220:Mars 2076:Eris 2016:Styx 1868:Rhea 1809:Mars 1797:Moon 1769:Eris 1681:Mars 1621:Eris 1546:Mars 1414:2019 1319:link 1131:PMID 1076:ISBN 926:read 901:read 869:2015 673:NASA 669:MUSE 648:Past 482:and 458:and 446:and 318:and 256:and 231:and 223:and 215:and 164:and 136:and 125:and 97:and 4571:Ice 3233:IAU 2351:PHA 2001:Nix 1710:Ice 1693:Gas 1526:Sun 1387:doi 1282:doi 1195:doi 1183:599 1123:doi 1101:524 1024:doi 1002:199 969:doi 947:873 795:doi 773:355 677:ESA 582:of 399:by 391:of 132:In 85:An 4557:: 4289:K2 2112:?) 1841:Io 1393:. 1385:. 1377:. 1365:34 1363:. 1359:. 1327:^ 1315:}} 1311:{{ 1296:^ 1280:. 1268:. 1262:. 1250:^ 1224:. 1193:. 1181:. 1177:. 1151:^ 1137:. 1129:. 1121:. 1113:. 1099:. 1074:. 1066:. 1044:^ 1030:. 1022:. 1014:. 1000:. 977:. 967:. 959:. 945:. 941:. 888:^ 859:, 852:, 815:^ 801:. 793:. 785:. 771:. 517:, 513:, 509:, 349:. 305:Ma 284:, 148:, 129:. 121:: 109:, 105:, 4497:: 3885:B 3880:A 3206:e 3199:t 3192:v 3171:→ 3162:→ 3155:→ 3148:→ 3141:→ 3135:→ 3129:→ 3123:→ 3116:→ 3109:→ 3102:→ 3095:→ 3088:→ 3081:→ 2517:) 2513:( 1650:, 1465:e 1458:t 1451:v 1389:: 1381:: 1371:: 1340:. 1321:) 1290:. 1284:: 1276:: 1270:5 1237:[ 1203:. 1197:: 1189:: 1145:. 1125:: 1117:: 1107:: 1084:. 1070:: 1060:: 1038:. 1026:: 1018:: 1008:: 985:. 971:: 963:: 953:: 809:. 797:: 789:: 779:: 293:E 290:M 280:— 142:K 34:. 20:)

Index

Ice giant planet
Ice giant (disambiguation)

Uranus
Voyager 2

Neptune
giant planet
hydrogen
helium
oxygen
carbon
nitrogen
sulfur
Solar System
Uranus
Neptune
astrophysics
planetary science
K
water
ammonia
methane
Volatiles
Jupiter
Saturn
gas giants
supercritical fluid
gas giants
James Blish

Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.