Formation of the Moon according to impact theory.
Image: Illustrator GHN
Lunar meteorite Dar al Gani 400
This rock was blasted off the moon by the impact of a large meteorite. It was captured by the Earth’s gravitational field and fell to Earth. The composition of lunar meteorites is similar to rock samples collected on the Moon by Apollo missions. This meteorite, Da al Gani 400, is kindly loaned by Hank Ebes.
Image: Benjamin Healley
Source: Museum Victoria
Over 4.5 billion years ago, a planet-sized body collided with Earth. Although most of the impact was absorbed into the still-molten Earth, the collision threw debris into space. A large section of this debris solidified in orbit around Earth and formed our Moon.