Could life 'spread' through solar systems? Scientists probe distant 'super Earth' to find if life can hop from world to world | Mail Online: "Could life 'hop' between worlds in a solar system in the form of living microbes carried through space on rocks?
Scientists have simulated rocks hurtling through the distant Gliese 581 system - the solar system thought most likely to harbour life, due to its 'super Earth', planet D, which falls in a habitable zone where liquid water could exist.
‘One of the big scientific questions is how did life spread,’ says professor Jay Melosh. ‘In our solar system a lot of exchange that takes place - it's quite possible life started on Mars and came to Earth.'"
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