Nov 10 1997
From The Space Library
Geochemists from the University of Michigan and the University of Tennessee announced that they had arrived at the most accurate and precise estimation of the age and origin of the Moon yet calculated. They suggested that a collision between the Earth and another planet, 4.5 to 4.52 billion years ago, resulted in the creation of the Moon. To reach their conclusion, the researchers used a special spectrometry technique to examine 21 lunar samples. The scientists also concluded that the collision had set Moon's orbit.
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