• Question: how many galixes are there in the universe

    Asked by 879grak46 to Daniel, Hannah, Maggie, Ry, Scott on 8 Nov 2017.
    • Photo: Maggie Lieu

      Maggie Lieu answered on 8 Nov 2017:

      In my work, I often study galaxy clusters, these are systems of hundreds to thousands of galaxies bound together by gravity. We currently think that there are billions of galaxy clusters in the Universe and our constraints of the number of galaxies currently stands at 2 Trillion or 2,000,000,000,000 !!! o_O

    • Photo: Ry Cutter

      Ry Cutter answered on 8 Nov 2017:

      Maggie’s answer is perfect!
      Now image how many stars there are, that’s 750 billion times 2Trillion,
      That’s 150,000,000,000,000,000,000,000 Stars (I don’t even know how to say that)
      The chances are most of those have planets, so the chances there is life outside of Earth seems very likely!
      Great Question,

      Ryan

    • Photo: Hannah Middleton

      Hannah Middleton answered on 8 Nov 2017:

      just like Maggie says! 😀

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