• Question: How big is the universe

    Asked by Albert Einstein to Claire, Liad, Ruth, Ryan, Mako on 21 Jun 2015.
    • Photo: Ryan Cheale

      Ryan Cheale answered on 21 Jun 2015:

      so so so big!
      it’s 13.3 billion light years across, that is it takes light 13.3 billion years to get to the other side!

      If you want it in metres here’s how

      light travels at 3×10^8 meteres every second (m/s) so thats 3,00,000,000m/s
      Then work out how many seconds in a year, so 60s * 60mins * 24 hours * 265days then we have seconds in the year!

      Multiply those together and then you how far light travels in a year, i.e a light year then times that by 13.3 billion!!

Comments