• Question: How many planets are therein the whole universe?

    Asked by coolragz to Bob, Katie, Nisha, Sallie, Vee on 27 Jun 2012.
    • Photo: Sallie Baxendale

      Sallie Baxendale answered on 27 Jun 2012:

      Nobody really knows, We are only now beginning to be able to “see” planets around other stars. Galaxies contain about 200-400 billion stars each. If every star had about 8 planets (like our sun) then the number of planets would be so large it’s just impossible to imagine

    • Photo: Vee Mitchell

      Vee Mitchell answered on 27 Jun 2012:

      As we don’t actually know how big the universe is or have any means of seeing it all, it’s impossible to say.

    • Photo: Bob Bonwick

      Bob Bonwick answered on 2 Jul 2012:

      Billions up on billions. We cannot see them all so there could be even more.

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