• Question: What do you think would happen if their was actually another galaxy? x

    Asked by amythomas99 to Adam, Catherine, Karen, Leila, Nazim on 15 Mar 2012.
    • Photo: Adam Stevens

      Adam Stevens answered on 15 Mar 2012:

      There /are/ other galaxies, loads of them. Billions of them!

    • Photo: Leila Battison

      Leila Battison answered on 15 Mar 2012:

      There are billions of other galaxies. You can even see one in the night sky without a telescope! It’s called the Andromeda galaxy and its a spiral shape, just like our galaxy the Milky Way.

      People sometimes get confused between galaxies, which are a pocket of stars all in one place, and the whole universe, which contains billions of those pockets, with more empty space in between. As far as we know, there is only one universe, and that contains everything we know about. If there was another universe, and we found out about it, it would change everything we know about physics and space!

    • Photo: Karen Masters

      Karen Masters answered on 15 Mar 2012:

      There are lots of other galaxies – we think billions of them. We have a list of 168 million extragalactic objects (galaxies for the most part) which you can have a look at: http://ned.ipac.caltech.edu/

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