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Half the lunar meteorites, for example, likely sample material from the farside of the Moon. At the time the first meteorite from the Moon was discovered in 1982, there was speculation that some other unusual meteorites that had been found originated from Mars. The positive identification of lunar meteorites on Earth supported the hypothesis ...
Artist's depiction of a collision between two planetary bodies. Such an impact between Earth and a Mars-sized object likely formed the Moon.. 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 leading theory of the Moon's origin is the giant impact theory, which postulates that Earth was once hit by a planetoid the size of Mars; such a theory is able to explain the size and composition of the Moon, something not done by other theories of lunar formation. [54]
An alternative theory holds that the monks just happened to be in the right place at the right time to see an exploding meteor coming at them and aligned with the Moon. This would explain why the monks were the only people known to have witnessed the event; such an alignment would only be observable from a specific spot on the Earth's surface. [8]
The NASA astronauts who became the first people to land on the moon's surface in the 1960s and 1970s also discovered a previously unknown lunar characteristic - it has an atmosphere, though quite ...
Timescale Artist's impression of the Moon during the Late Heavy Bombardment (above) and today (below). The Late Heavy Bombardment (LHB), or lunar cataclysm, is a hypothesized astronomical event thought to have occurred approximately 4.1 to 3.8 billion years (Ga) ago, [1] at a time corresponding to the Neohadean and Eoarchean eras on Earth.
The Karin family, formed 5.8 million years ago, and the Koronis family, formed 7.6 million years ago, account for a class of meteorites called H chondrites that represent 33% of known Earth ...
The fragments are now a part of the University of Alberta Meteorite Collection. Original article source: See it and hear it: The first recorded video, sound of a meteorite hitting Earth Show comments