• Question: How many other galaxies do you think there might be?

    Asked by Eloise M-G ;) to Anna, Stefan on 20 Nov 2014. This question was also asked by Anna W.
    • Photo: Anna Scaife

      Anna Scaife answered on 20 Nov 2014:

      Hey Eloise – we think there are about 100 billion galaxies in the universe (so 100 billion minus one more 🙂 ). We haven’t actually seen all of them, but we know roughly what the density of galaxies is (i.e. the number in a particular volume) and we can multiply up.

    • Photo: Stefan Lines

      Stefan Lines answered on 20 Nov 2014:

      It’s mind-blowing to think there are about 100 billion galaxies, but even the nearest one to us would still take 6 billion years to travel to in a regular rocket 😮

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