• Question: Is there a way of measuring the size of the universe?

    Asked by harryj to Daphne, Darren, Jon, Katherine on 21 Mar 2012.
    • Photo: Katherine Haxton

      Katherine Haxton answered on 21 Mar 2012:

      There’s a really great answer here: http://www.universetoday.com/36469/size-of-the-universe/

    • Photo: Darren Logan

      Darren Logan answered on 21 Mar 2012:

      Yes, you can do a rough calculation based upon the speed of light and the Big Bang (when the universe emerged and started to expand) and come up with 930 billion trillion kilometers across. Thats about as big as “visible” space can be. Nobody knows what exists beyond visible space, but if you want to call that space too, then space is probably infiniteā€¦ it just goes on forever and ever.