• Question: how do you fined new universes

    Asked by anon-245309 to David on 6 Mar 2020.
    • Photo: David Sobral

      David Sobral answered on 6 Mar 2020: last edited 7 Mar 2020 11:28 am

      We can always make new ones in a computer of course, but observationally we can’t find new/other Universes (at least so far!).

      Having said that, both me and many Astronomers can find new galaxies, which contain hundreds of billions of stars and planets, so it’s almost like they are mini-Universes.

      In order to do that I use some large telescopes on the ground and in space to survey large patches of the sky. I specifically use special filters to go back in time by specific amounts and slice the Universe in cosmic time so galaxies that existed say 1 ,2, 4, 5, 10 billion years ago light up in the sky with these special filters.

      You can learn more in this simple video that explains how I do it with my students and colleagues: https://youtu.be/K9I469U_W5s and https://youtu.be/tKb2osj3nkU

Comments