Thread: True or False
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Old January 2nd, 2013, 04:30 PM   #1510 (permalink)
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I'll say true.

As for gravitational fields in planetary systems, we use planetary forces on stars' motions to detect distant planets. And because Google is now this thread's official friend -

Why is the Earth moving away from the sun? - space - 01 June 2009 - New Scientist

Good news, the earth won't escape because some day the sun will expand and just swallow what's left of it right up.
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