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Physics 7 Online
OpenStudy (gandalf123):

What are some of the things that astronomers are looking for to identify distant planets?

OpenStudy (chealyn98):

http://science.howstuffworks.com/question316.htm

OpenStudy (fortytherapper):

Right, and I believe the wobble is due to light? I would also look at things at composition and rotational movement if I was an Astronomer (One day hopefully)

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