• Question: is it true there was life on mars and if so how do we know

    Asked by rhiannon to Dan, David, Dawn, Sian on 22 Jun 2016.
    • Photo: David Robertson

      David Robertson answered on 22 Jun 2016:

      We don’t know if there was life on Mars or not (or if there still is!). More exploration is going on to look for it, or for signs that it has existed.

    • Photo: Dawn Lau

      Dawn Lau answered on 22 Jun 2016:

      The Curiosity rover has been on Mars since 2012 trying to find an answer to this question. One of its aims is to find whether there is any evidence of water and chemical building blocks of life. This would tell us whether Mars has an environment suitable for life (even just tiny organisms).

    • Photo: Sian Thomas

      Sian Thomas answered on 22 Jun 2016:

      So I have a different answer here! I think that we have already found evidence of water on Mars – in a variety of forms. Which means it is entirely possible that there was (or is?) life.

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