Recent content by fez

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    Gravity: How do objects communicate?

    Aaaah, so objects are attracted to a mutual center of mass! I always thought Little was simply attracted to Big. I now understand your first answer, phyzguy. Thanks jtbell for clarifying that for me. Can I beg your patience to let me re-coach my original question (How do objects...
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    Gravity: How do objects communicate?

    It's because the Earth is larger than comets... but how do they know that? How does my body know it should be attracted to the ground? Better yet, how does my body even know the ground is there?
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    Gravity: How do objects communicate?

    And why doesn't the Earth go chasing after passing comets?
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    Gravity: How do objects communicate?

    Thanks for the answer, but I'm still a bit confused. If the force is the same, why doesn't the Earth revolve around the moon?
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    Gravity: How do objects communicate?

    I understand that small objects are attracted to large... but how do two objects know which is which? How does the moon know that the Earth is bigger, thus it should be attracted to earth?
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