• Question: How could the water arrive in Mars scientifically?

    Asked by Currete_cr_13 to Mike, Julio, Jaine, Dave, Annette on 15 Nov 2016.
    • Photo: Jaine Blayney

      Jaine Blayney answered on 15 Nov 2016:

      Like the earth, it was possibly present as part of the planet’s formation, or it could have come from other planetary sources eg collisions with comets. Scientists are still not completely sure as to where Earth’s water originated from!

    • Photo: Annette Neill

      Annette Neill answered on 17 Nov 2016:

      This is an age old puzzle that scientists are still pondering. So no-one knows exactly (yet!) The evidence to date suggests that years ago, Mars was similar to Earth-wet! But now there are polar ice caps on Mars which you can actually see with an ordinary telescope.

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