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... till a hot magma ball. At this time, a planet about the size of Mars hit the earth, and a considerable part of the material was destroyed. The impact vaporized and formed an atmosphere of rock vapor, some of which completely melted with the Earth, and some that split off to form the current moon.
This scholar named the planet Theia after the mother of the goddess Selene in ancient Greek mythology. Gravity increases, leaving the Lagrangian point and entering an orbit where it collides with ...
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