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The Question

(Submitted April 19, 1999)

I am in the 7th grade, and have a great interest in astronomy. A couple of days ago, I read an article in the newspaper about a new solar system that has been found, with multiple planets orbiting a star. Could you tell me where to find more information on this?

The Answer

The star in question is Upsilon Andromedae. The discovery of 2nd and 3rd planets is very new, in fact this hasn't been published yet in a proper form. (The discovery of the first planet was announced in 1997).

The group who announced this discovery has a web site on it: http://www.physics.sfsu.edu/~gmarcy/planetsearch/upsand/upsand.html

A good site for extrasolar planets in general is:

http://exoplanets.org/

Hope this helps,

Koji Mukai
for "Ask an Astrophysicist"

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