Formation of the Moon. Artwork of a Mars-sized protoplanet (Theia) looming over a proto-Earth with which it is about to collide. This illustrates the
RMID:Image ID:2ACPPPT
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Science Photo Library / Alamy Stock PhotoImage ID:
2ACPPPTFile size:
55.3 MB (2.3 MB Compressed download)Releases:
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5368 x 3599 px | 45.4 x 30.5 cm | 17.9 x 12 inches | 300dpiDate taken:
2 July 2013Photographer:
RICHARD BIZLEY/SCIENCE PHOTO LIBRARYMore information:
Formation of the Moon. Artwork of a Mars-sized protoplanet (Theia) looming over a proto-Earth with which it is about to collide. This illustrates the giant impact theory of the formation of the Moon. This theory says that an object about the size of Mars collided with the Earth around 4.6 billion years ago, soon after they both formed. The impact was side-on, rather than a direct impact. Material from the outer layers of both bodies was thrown into orbit around the Earth, forming a ring. This then coalesced to form the Moon. For the Moon being formed following this collision, see image C016/5353.