NASA: National Aeronautics and Space Administration


Ask an Astrobiologist
"What would be a good and accessible book or books for someone who was interested in astrobiology?"
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  1. Question

    What domain and kingdom is the Swine Flu (H1N1) placed in?

    H1N1 is a virus, and viruses are not a part of the standard taxonomy of life with the three domains of bacteria, archaea, and eukaria. Indeed, some biologists do not consider viruses to really be alive, since they depend on invading living cells in order to metabolize and reproduce. There is, however, a Virus Focus Group within the NASA Astrobiology Institute that is studying the properties of viruses, including questions of their origin and how they fit into the broad classification of life on Earth. You can find out more about this work on this website under NAI focus groups.

    David Morrison
    NAI Senior Scientist

    May 12, 2009