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Yeah and we could still distinguish it from alien life later with genetic analysis

• LatteLazy 4y ago
  That assumes that native life doesn't just get out competed by the introduced life...
  • belter 4y ago
    Maybe that is what happened here. The cycle completes...
  • jstanley 4y ago
    It seems more likely that the opposite would happen. Life that has evolved on Mars would probably be better suited to Mars than life that evolved on Earth.