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South Pole–Aitken basin

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380:; alternatively, the rocks in the basin could contain a component from the lunar mantle if the basin excavated all the way through the crust; and, finally, it is possible that a large portion of the lunar surface surrounding the basin was melted during the impact event, and differentiation of this impact melt sheet could have given rise to additional geochemical anomalies. Complicating the matter is the possibility that several processes have contributed to the basin's anomalous geochemical signature. Ultimately, the origin of the anomalous composition of the basin is not known with certainty and will likely require a sample return mission to determine. 315: 243: 327:
8500 m and base-to-peak heights of up to 7000 m. Because of this basin's great size, the crust at this locale is expected to be thinner than typical as a result of the large amount of material that was excavated due to an impact. Crustal thickness maps constructed using the Moon's topography and gravity field imply a thickness of about 30 km beneath the floor of this basin, in comparison to 60–80 km around it and the global average of about 50 km.
426: 2386: 41: 1251: 450: 438:) that hit at a low angle (about 30 degrees or less), and hence did not dig very deeply into the Moon. Putative evidence for this comes from the high elevations north-east of the rim of the South Pole–Aitken basin that might represent ejecta from such an oblique impact. The impact theory would also account for magnetic anomalies on the Moon. 434:
presence of about 10 kilometers of crustal materials beneath this basin's floor. This has suggested to some that the basin was not formed by a typical high-velocity impact, but may instead have been formed by a low-velocity projectile around 200 km in diameter (compare to the 10 km diameter
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of lunar surface and imaged Chang'e 6 lander on lunar surface. The lander-ascender-rover combination was separated with the orbiter and returner before landing on 1 June 2024 at 22:23 UTC. It landed on the Moon's surface on 1 June 2024. The ascender was launched back to lunar orbit on 3 June 2024 at
372:. Several possibilities exist for this distinctive chemical signature: one is that it might simply represent lower crustal materials that are somewhat richer in iron, titanium and thorium than the upper crust; another is that the composition reflects the widespread distribution of ponds of iron-rich 433:
Simulations of near vertical impacts show that the bolide ought to have excavated vast amounts of mantle materials from depths as great as 200 km below the surface. However, observations thus far do not favor a mantle composition for this basin and crustal thickness maps seem to indicate the
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than typical lunar highlands, and hence has a darker appearance. The topography of the basin was mapped in its entirety for the first time using altimeter data and the analysis of stereo image pairs taken during the Clementine mission. Most recently, the composition of this basin has been further
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The South Pole–Aitken basin is the largest, deepest and oldest basin recognized on the Moon. The lowest elevations of the Moon (about −9000 m) are located within the South Pole–Aitken basin. The Moon's tallest mountains are found around the basin's rim – they have summit elevations of up to
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became available in 1966-7 that geologists recognized its true size. Laser altimeter data obtained during the Apollo 15 and 16 missions showed that the northern portion of this basin was very deep, but since these data were only available along the near-equatorial
904:"China's Chang'e-6 sample return mission (a first ever lunar far side sample-return) is scheduled to launch in May 2024, and expected to take 53 days from launch to return module touchdown. Targeting southern area of Apollo basin (~43º S, 154º W)" 2362: 360:, have comparable compositions. The orbital data indicate that the floor of the basin has slightly elevated abundances of iron, titanium, and thorium. In terms of mineralogy, the basin floor is much richer in 685: 413:
23:38 UTC, carrying samples collected by the lander, and later completed another robotic rendezvous and docking in lunar orbit. The sample container was then transferred to the returner, which landed on
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data. Red represents high elevation, purple represents low elevation. The purple and grey elliptical rings trace the inner and outer walls of the basin. (The black ring is an old artifact of the image.)
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James, Peter B.; Smith, David E.; Byrne, Paul K.; Kendall, Jordan D.; Melosh, H. Jay; Zuber, Maria T. (2019). "Deep Structure of the Lunar South Pole-Aitken Basin".
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W. M. Kaula; G. Schubert; R. E. Lingenfelter; W. L. Sjogren; et al. (1974). "Apollo laser altimetry and inferences as to lunar structure".
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Petro, Noah E.; Pieters, Carle M. (2004-05-05), "Surviving the heavy bombardment: Ancient material at the surface of South Pole-Aitken Basin",
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missions, appears to be different from typical highland regions. Most importantly, none of the samples obtained from the American
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The existence of a giant far side basin was suspected as early as 1962 based on early Soviet probe images (namely
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Ivanov, M. A.; Hiesinger, H.; van der Bogert, C. H.; Orgel, C.; Pasckert, J. H.; Head, J. W. (October 2018).
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visited the Moon. Multispectral images obtained from these missions showed that this basin contains more
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constrained by the analysis of data obtained from a gamma-ray spectrometer that was on board the
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Wieczorek MA; Weiss BP; Stewart ST (2012). "An impactor origin for lunar magnetic anomalies".
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P. Lucey; et al. (2006). "Understanding the lunar surface and space-Moon interactions".
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The Clementine Mission found ice in the Aitken Basin while mapping southern lunar region
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Potter, R. W. K.; Collins, G. S.; Kiefer, W. S.; McGovern, P. J.; Kring, D. A. (2012).
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located on the Moon's southern limb, sometimes informally called "Leibnitz mountains".
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on 25 June 2024, completing China's far side extraterrestrial sample return mission.
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from the lunar near side four years earlier. It also carried a Chinese rover called
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The South Pole–Aitken basin is the darker area at the bottom of this image of the
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on the northern end. The outer rim of this basin can be seen from Earth as a huge
903: 846: 782: 583:"Chang'e 4 landing: China probe makes historic touchdown on far side of the moon" 2332: 2316: 2258: 2230: 2216: 2191: 2082: 2032: 1703: 1441: 1420: 1207: 473: 400:. This is China's second lunar sample return mission, the first was achieved by 369: 2145: 1724: 1650: 1627: 1590: 1544: 1486: 1305: 445: 377: 191:. It is estimated that it was formed 4.2 to 4.3 billion years ago, during the 40: 1093: 652: 80: 67: 2152: 2138: 2124: 2108: 2101: 2050: 1772: 1680: 1404: 1344: 1298: 1230: 1058: 990: 931: 713: 1066: 888: 2159: 2117: 2094: 1972: 1337: 986:"Chang'e-6 lands on far side of the moon to collect unique lunar samples" 644: 558: 533: 518: 246: 195:
epoch. It was named for two features on opposite sides of the basin: the
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spacecraft, landed in the basin, specifically within a crater called
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photograph showing the mountains along the northern rim of the basin
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on 3 May 2024, which conducted the first lunar sample return from
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aims to collect sample from this crater, specifically within the
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China's Journey to the Lunar Far Side: A Missed Opportunity?
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of material had been identified deep within the crater.
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Chang'e-5/6 spacecraft full-stack full-scale mockup.
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The composition of the basin, as estimated from the
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It is the largest, oldest, and deepest 538:Journal of Geophysical Research: Planets 356:missions, nor the handful of identified 48:of the South Pole–Aitken basin based on 1113:Searching for water in the Aitken Basin 491: 489: 485: 1094:"The biggest hole in the Solar System" 869:Reviews in Mineralogy and Geochemistry 783:"The Biggest Hole in the Solar System" 32: 7: 376:, similar to those that make up the 102:About 2,500 km (1,600 mi) 25: 2363:Lilith (hypothetical second moon) 925:Jones, Andrew (10 January 2024). 707:Jones, Andrew (10 January 2024). 2385: 2384: 2326:Moon landing conspiracy theories 1249: 781:Taylor, G. Jeffrey (July 1998). 674:Griffin, Andrew (10 June 2019). 448: 140: 1748:Selenographic coordinate system 965:from the original on 8 May 2024 902:Andrew Jones (25 April 2023). 754:D. E. Stuart-Alexander (1978). 688:from the original on 2022-05-24 498:Journal of Geophysical Research 276:United States Geological Survey 27:Large impact crater on the Moon 2275:Artificial objects on the Moon 1014:"落月时刻 2024-06-02 06:23:15.861" 1: 1366:Total penumbral lunar eclipse 984:Jones, Andrew (1 June 2024). 737:Proc. Lunar Planet. Sci. Conf 2417:Surface features of the Moon 2341:Moon is made of green cheese 1635:Permanently shadowed craters 953:Jones, Andrew (6 May 2024). 847:10.1016/j.icarus.2012.05.032 625:Geophysical Research Letters 177:largest known impact craters 1020:) (in Chinese) – via 1012:Seger Yu (June 1, 2024). 611:Air & Space Smithsonian 272:command and service modules 2443: 2422:Impact craters on the Moon 2268:Craters named after people 1741:Transient lunar phenomenon 1389:Solar eclipses on the Moon 1092:G. Jeffrey Taylor (1998). 199:at one end and the crater 2379: 1247: 1160: 807:The Moon's Highs and Lows 38: 310:Physical characteristics 2289:Moon in science fiction 1794:Giant-impact hypothesis 1642:South Pole–Aitken basin 1059:10.1126/science.1214773 210:On 3 January 2019, the 136:South Pole–Aitken basin 34:South Pole–Aitken basin 18:South Pole-Aitken basin 2310:futuristic exploration 1833:Late Heavy Bombardment 788:. University of Hawaii 760:U.S. Geological Survey 430: 323: 250: 2370:Splitting of the Moon 2282:Memorials on the Moon 1886:Lunar sample displays 1568:Peak of eternal light 889:10.2138/rmg.2006.60.2 856:on December 21, 2014. 428: 410:infrared spectroscopy 317: 263:Lunar Orbiter program 245: 645:10.1029/2019GL082252 559:10.1029/2018JE005590 519:10.1029/2003je002182 398:far side of the Moon 320:far side of the Moon 173:far side of the Moon 1870:Lunar laser ranging 1051:2012Sci...335.1212W 1045:(6073): 1212–1215. 881:2006RvMG...60...83L 839:2012Icar..220..730P 768:1978USGS...IM.1047S 637:2019GeoRL..46.5100J 550:2018JGRE..123.2585I 510:2004JGRE..109.6004P 464:Geology of the Moon 456:Solar System portal 77: /  35: 30:Feature on the moon 2019:Lunisolar calendar 1688:Lunar basalt 70017 1435:Tidal acceleration 1290:Perigee and apogee 1180:Internal structure 436:Chicxulub impactor 431: 324: 251: 187:recognized on the 2399: 2398: 2349:Natural satellite 1808:Lunar magma ocean 1584:Volcanic features 631:(10): 5100–5106. 544:(10): 2585–2612. 132: 131: 16:(Redirected from 2434: 2392: 2388: 2387: 2372: 2365: 2358: 2351: 2344: 2335: 2328: 2319: 2312: 2305: 2298: 2291: 2284: 2277: 2270: 2261: 2254: 2247: 2240: 2233: 2226: 2219: 2201: 2194: 2192:Meridian passage 2187: 2169: 2162: 2155: 2148: 2141: 2134: 2127: 2120: 2111: 2104: 2097: 2074: 2067: 2060: 2053: 2042: 2035: 2028: 2021: 2014: 1991: 1984: 1975: 1968: 1961: 1954: 1945: 1938: 1931: 1911: 1909:Lunar seismology 1902: 1895: 1888: 1879: 1872: 1865: 1858: 1851: 1844: 1842:Lunar meteorites 1835: 1828: 1821: 1810: 1803: 1796: 1789: 1782: 1775: 1768: 1750: 1743: 1736: 1727: 1720: 1713: 1711:Space weathering 1706: 1697: 1690: 1683: 1676: 1669: 1660: 1653: 1644: 1637: 1630: 1623: 1616: 1607: 1600: 1593: 1586: 1579: 1570: 1563: 1554: 1547: 1536: 1529: 1522: 1515: 1508: 1501: 1494: 1489: 1482: 1475: 1453: 1444: 1437: 1430: 1423: 1416: 1407: 1398: 1391: 1384: 1375: 1368: 1361: 1354: 1347: 1340: 1333: 1324: 1315: 1308: 1301: 1292: 1285: 1278: 1276:Orbital elements 1271: 1253: 1240: 1233: 1226: 1219: 1210: 1203: 1196: 1189: 1182: 1147: 1140: 1133: 1124: 1097: 1079: 1078: 1032: 1026: 1025: 1009: 1003: 1002: 1000: 998: 981: 975: 974: 972: 970: 950: 944: 943: 941: 939: 922: 916: 915: 899: 893: 892: 864: 858: 857: 855: 849:. 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Index

South Pole-Aitken basin

Topographic map
Kaguya
Coordinates
53°S 169°W / 53°S 169°W / -53; -169
Diameter
Depth
Eponym
Lunar south pole
Aitken (crater)
/ˈtkɪn/
impact crater
far side of the Moon
largest known impact craters
Solar System
basin
Moon
Pre-Nectarian
lunar South Pole
Aitken
mountain chain
Chang'e 4
Chinese
Von Kármán
large mass
Chang'e 6
Apollo basin

Apollo 8

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