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The Question

(Submitted March 17, 1997)

I'm an undergraduate student in Physics and I would like to have some information on extra-terrestrial life for my astrophysics project.

It would also be a help if you could propose some web sites.

The Answer

There has been quite a bit of work on extraterrestrial life, both from a theoretical point of view and also based on the known properties of the planets in our solar system, notably mars. A place to start is the SETI institute.

We are interested primarily in X-rays, gamma-rays, and cosmic rays in astronomy, and so can claim no particular expertise in this area. I hope that these references are some help.

Tim Kallman
for the Ask an Astrophysicist team.

Questions on this topic are no longer responded to by the "Ask an Astrophysicist" service. See http://imagine.gsfc.nasa.gov/docs/ask_astro/ask_an_astronomer.html for help on other astronomy Q&A services.

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