Thread: The ULTIMATE astronomy quiz
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Old 26-October-2007, 12:19 AM
tracer tracer is offline
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Originally Posted by antoniseb View Post
Hmmm. I think that leaves out Cepheids.
Damn, that was gonna be my guess too.

Hmmm ... becomes bluer, becomes bluer ...


Is the change in blueness caused by a change in radial velocity?
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