• Question: Where is the edge of space?

    Asked by Johann_Seidler to Joe, Jos, Kate, Lisa, Pierre on 8 Nov 2014.
    • Photo: Joshaniel Cooper

      Joshaniel Cooper answered on 8 Nov 2014:

      As I understand, the current thinking is that space is infinite! However, this doesn’t mean we can see all of it. Since light takes time to get between places and the universe is around 13.6 billion years old this means that the furthest we would be able to see would be around 900 million million times the distance from the earth to the sun (13.6 billion light years or 8 hundred thousand million million million miles).

    • Photo: Lisa Simmons

      Lisa Simmons answered on 10 Nov 2014:

      This is far out from my field so I don’t feel qualified to answer. As far as I know space is infinite, and is constantly changing. It’s a wacky world astrophysics and I wouldn’t want to do it any injustice.

    • Photo: Kate Dobson

      Kate Dobson answered on 10 Nov 2014:

      I know that physicists think that space is infinite, so I don’t think it has an “edge” as such. Either way, I did physics as one of mey main subjects at university and I still find it very hard to image what infinite looks like….

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