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The Lunar Magma Ocean (LMO) is the layer of molten rock that is theorized to have been present on the surface of the Moon. The LMO was likely present on the Moon from the time of the Moon's formation (about 4.5 or 4.4 billion years ago [1]) to tens or hundreds of millions of years after that time. The LMO was a thermodynamic consequence of the ...
Magma oceans are integral parts of planetary formation as they facilitate the formation of a core through metal segregation [3] and an atmosphere and hydrosphere through degassing. [4] Evidence exists to support the existence of magma oceans on both the Earth and the Moon. [1][5] Magma oceans may survive for millions to tens of millions of ...
The giant-impact hypothesis, sometimes called the Theia Impact, is an astrogeology hypothesis for the formation of the Moon first proposed in 1946 by Canadian geologist Reginald Daly. The hypothesis suggests that the Early Earth collided with a Mars -sized protoplanet of the same orbit approximately 4.5 billion years ago in the early Hadean eon ...
The geology of the Moon (sometimes called selenology, although the latter term can refer more generally to "lunar science") is quite different from that of Earth. The Moon lacks a true atmosphere, and the absence of free oxygen and water eliminates erosion due to weather. Instead, the surface is eroded much more slowly through the bombardment ...
One of the best-known moon rocks, ferroan anorthosite is thought to be pieces of the original lunar crust that could have been formed by a magma ocean, according to the Lunar and Planetary Institute.
Pristine lunar FAN is some of the oldest lunar rock and the original cumulate of the lunar magma ocean, with the Mg-suite forming from later impacts and plutonism. [18] However, debate exists on the magma ocean fractionation complicated by surface impact mixing with evidence potentially indicating MAN being older and more primitive. [19]
The first lunar samples collected during the Apollo 11 mission in 1969 led researchers to the theory that the moon was once a molten ball of magma. The 842 pounds (382 kilograms) of lunar rocks ...
Theia (planet) Theia (/ ˈθiːə /) is a hypothesized ancient planet in the early Solar System which, according to the giant-impact hypothesis, collided with the early Earth around 4.5 billion years ago, with some of the resulting ejected debris coalescing to form the Moon. [1][2] Collision simulations support the idea that the large low-shear ...