NASA: National Aeronautics and Space Administration

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  1. Question

    What type of living organisms are there on planets?

    What sort of planets did you have in mind? I expect you are already familiar with the life on planet Earth. So far we know of no other planet besides our own that hosts life. Thus I can't answer about these other worlds, since it is not possible to describe life that we have not yet discovered.

    David Morrison
    NAI Senior Scientist

    June 21, 2004