science

explain why earth has a moon

asked by polly
  1. http://arxiv.org/abs/astro-ph/0405372

    posted by Count Iblis
  2. It was an accident. A very large asteroid is believed to have hit the earth billions of years ago and that the moon was released as a molten blob by the impact. Later it cooled down to a sphere, as the Earth did.

    See http://www.psi.edu/projects/moon/moon.html
    for more details about the theory

    posted by drwls
  3. thank you

    posted by polly

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