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> Moon Formation: Giant impact hypothesis

Moon Formation: Giant impact hypothesis

author: Ron Miller/Novapix

reference: a-lun99-00024

Image Size 300 DPI: 15 * 46 cm

The giant-impact hypothesis, sometimes called the Big Splash, or the Theia Impact suggests that the Moon formed out of the debris left over from a collision between Earth and a body of the size of Mars, approximately 4.5 billion years ago.

Keywords for this photo:

ASTRONOMY - COLLISION - EARTH - EARTH FROM SPACE - FORMATION - ILLUSTRATION - IMPACT - MOON - PLANET - PRECAMBRIAN - PRIMITIVE EARTH - RING - SATELLITE - THEIA -