 Lunar Meteorite Allan Hills 81005 A Lunar meteorite is a meteorite that is known to have originated on the Moon. Image File history File links Lunar_Meteorite. ...
Image File history File links Lunar_Meteorite. ...
A meteorite is a small extraterrestrial body that impacts the Earths surface. ...
Crust composition Oxygen 43% Silicon 21% Aluminium 10% Calcium 9% Iron 9% Magnesium 5% Titanium 2% Nickel 0. ...
Discovery The first lunar meteorite, Yamato 791197, was discovered in 1979 in Antarctica; but at that time its origins were unknown. The first meteorite of definite lunar origin was Allan Hills 81005 which was found in 1981 [1]. Meanwhile more than two dozen other different meteorites from the Moon are known, with a total mass of about 8kg. This page refers to the year 1979. ...
1981 (MCMLXXXI) was a common year starting on Thursday of the Gregorian calendar. ...
A meteorite is a small extraterrestrial body that impacts the Earths surface. ...
Crust composition Oxygen 43% Silicon 21% Aluminium 10% Calcium 9% Iron 9% Magnesium 5% Titanium 2% Nickel 0. ...
Lunar origin may be established by comparing the mineralogy, the chemical composition, and the isotopic composition between meteorites and samples from the Moon collected by Apollo missions. The first Lunar meteorite to have its origin pinpointed was Sayh al Uhaymir (SaU) 169 discovered in Oman. It is believed to have been ejected from the skirt of ejecta surrounding the Lalande crater within the last 340,000 years. Description Role: Earth and Lunar Orbit Crew: 3; CDR, CM pilot, LM pilot Dimensions Height: 36. ...
Lalande is a small lunar impact crater that lies in the central part of the visible Moon, on the east edge of Mare Insularum. ...
Transfer to Earth Lunar meteorites are launched from the Moon by large impacts. Until the discovery of Sayh al Uhaymir, no single crater could be identified as the origin of lunar meteorites. Noble gas measurements have shown that the typical time for a lunar meteorites to arrive at the earth is in the range of hundred thousands to one million years. This shows that after break-up from moon, lunar meteorites do not directly travel towards earth. They rather spend a long time orbiting the earth moon system. Sayh al Uhamir is a meteorite found in the Sayh al Uhaymir region of Oman, originating from the Moon. ...
Scientific relevance For statistical reasons, the composition of lunar meteorites is closer to the average composition of the lunar surface material than the composition of the samples from Apollo and Luna missions. Apollo and Luna samples are from a relatively small area on the nearside of the Moon, whereas lunar meteorites possibly also samples material from the farside of the Moon. Description Role: Earth and Lunar Orbit Crew: 3; CDR, CM pilot, LM pilot Dimensions Height: 36. ...
The Luna programme was a series of 24 unmanned space missions sent to the Moon by the Soviet Union between 1959 and 1976. ...
When the first meteorite from moon was discovered in 1982 this led to new speculations that there could also exist meteorites from Mars. In fact, the first Martian meteorite was identified in the same year. There are also speculations about the possibility of finding "Earth meteorites" on the surface of the Moon. This would be very interesting because in this case stones from earth older than 3.9 billion years, which are destroyed on earth by various geological processes, may have survived on the Moon. Thus some scientists propose new missions to the Moon to search for ancient rocks from Earth. Mars is the fourth planet from the Sun in the solar system, named after the Roman god of war (the counterpart of the Greek Ares), on account of its blood red color as viewed in the night sky. ...
A Martian meteorite is a meteorite that has landed on Earth but is believed to have originated from Mars. ...
Earth is the third planet from the Sun. ...
History Today, about one in every thousand newly discovered meteorites is a lunar meteorite, whereas the vast majority of meteorites are from the asteroid belt. In the early 19th century most scientists believed that all meteorites were from the moon. Although today supported only by a minority of researchers, there are also theories that Tektites are from moon, and should therefore also be regarded as lunar meteorites. However, most scientists regard such theories as outdated. A tektite Tektites (from Greek tektos, molten) are natural glass objects, up to a few centimeters in size, which — according to most scientists — have been formed by the impact of large meteorites on Earths surface, although a few researchers favor an origin from the Moon as volcanic ejecta. ...
Own your own moonrock Lunar meteorites are the only source of moon rocks which can be owned by the public. All rocks collected during the Apollo moon-landing program are considered to be the property of humanity as a whole, held for the benefit of scientific study, and it is illegal to own, buy or sell them. (A recent attempt to sell stolen moonrocks, originally given as gifts to heads-of-state by the American Government, was foiled by an undercover "sting" after a tip-off from a meteorite expert). The small amount of moonrock returned by the Russian Luna 16 probe is also unavailable. Statue of Apollo at the British Museum Apollo (Greek: Απόλλων, ApóllÅn; Απελλων) is a god in Greek and Roman mythology, the son of Zeus and Leto, and the twin of Artemis (goddess of the hunt), one of the most important and many-sided of the Olympian divinities. ...
Luna 16 was an unmanned space mission of the Luna program, also called Lunik 16. ...
Of those lunar meteorites which are found on Earth, those found in Antarctica are similarly considered to be the property of mankind. Only those found elsewhere - chiefly in deserts in areas such as Oman - are traded on the open market, like other meteorites.
References - [1] Warren P. H., Taylor G. J., Keil K. (1983) Regolith breccia Allan Hills A81005: Evidence of lunar origin and petrography of pristine and nonpristine clasts, Geophys. Res. Lett. 10, 779-782.
Breccia, derived from the Latin word for broken, is a sedimentary rock composed of angular fragments in a matrix that may be of a similar or a different material. ...
See also Exploring Shorty crater during the Apollo 17 mission to the Moon. ...
This is a list of lunar meteorites. ...
Genesis Rock returned by the Apollo 15 mission. ...
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