• Question: is space endless ? and if it is how?

    Asked by KaiF to Anna, James, Joe, Leonie, Olivia on 16 Mar 2015.
    • Photo: James Pope

      James Pope answered on 16 Mar 2015:

      Hi KaiF,

      No one is entirely sure about the actual size of space. We know it is massive, and we know from a theory called the Doppler Effect that galxies are moving away from each other still, but the actual size of space will depend on the version of physics that is correct.

      We know the observable universie is around about 90 billion lightyears, but beyond that it is probably infinite (endless), going on forever, but it may have a set size where it borders another universe according to another theory. We just don’t know and probably never will.

      If it is endless, well I just don’t know what the answer is. Even if it isn’t endless, it still begs the question, what is outside the universe? I guess that each religion would say that is the realm of their Gods, but for me, I just don’t know.

    • Photo: Joe Spencer

      Joe Spencer answered on 16 Mar 2015:

      KaiF.
      No one really knows and there’s lots of debate on the answer to this question. As James said the observable universe is about 90 billion lightyears across and that’s all we know

    • Photo: Olivia Lynes

      Olivia Lynes answered on 18 Mar 2015:

      It depends on if you think the universe is expanding all the time or has a limit to it’s edges.

      I do know that we won’t find out because if it is expanding then we can’t see the boundary now, it continuing to move away from us means it’s even less likely we will be able to see it.

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