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Message: <blockquote data-quote="tuggyman" data-source="post: 271926" data-attributes="member: 204178">For 4.5 Billion years our planet has been spinning, that is perpetual motion in my book.What i cannot understand is yes it's in fictionless space but it has gravitational forces pulling at it in the shape of our moon, causing Trillions of tons of water to be displaced every second. I would of thought this would be a damping effect, where is all this energy to displace all this mass coming from?:-worship You don't get out for nowt.<img src="https://www.satellites.co.uk/styles/default/xenforo/smilies/smile.png"  class="smilie" loading="lazy" alt=":)" title="Smile    :)" data-shortname=":)" /> Please help me understand!!!!!</blockquote>