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Planet moons

  1. Sep 2, 2006 #1
    Being new to astronomy, I was wondering, do all planets have moons? What are they? how did they get there?
  2. jcsd
  3. Sep 3, 2006 #2


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    Staff: Mentor

    No, not all planets have moons - Mercury and Venus don't.

    Moons are generally either captured asteroids, blasted off pieces of the planet they orbit (our moon, probably), or just formed from the same disk of dust that formed the planet they orbit.
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