• Question: How can space, if it's infinity, be expanding???

    Asked by bolgan13 to Arlene, Colin, David, Eugene, Paul on 16 Nov 2012.
    • Photo: Colin Johnston

      Colin Johnston answered on 16 Nov 2012:

      Infinity can get bigger (Here’s infinity, now add 1 to it, or multiply it by a thousand, either way you’ve made infinity bigger) so it’s not really a problem.

    • Photo: Paul Higgins

      Paul Higgins answered on 18 Nov 2012:

      Also space (or as Einstein calls it: “time-space”) is at least 4-dimensional. We can only see 3 of the dimensions: vertical, right to left, and front to back. When space stretches, it is in 4 dimensions. So to imagine infinity expanding, remember there is a 4th dimension to expand into.

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