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Questions regarding the planet on which humans live; the third planet from the Sun.

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How to resolve the Moon's observed angular velocity with that given by Kepler's Third Law

For the general case of two masses interacting according to Newton's Law of Universal Gravitation, the two masses actually orbit about the center of mass of the system, not necessarily the center of t …
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-2 votes

How do scientists know that Earth used to spin much more rapidly?

Good insight to the common understanding of the Earth spinning velocity (The Moon's gravitational pull, wind speeds, movement in the Earth's core, atmospheric pressure, the melting of the ice glaciers) … Today, when we have the best precision of making spinning measurements by atomic clock, scientists observe noticeable fluctuations of how fast the Earth is spinning. …
Lariliss's user avatar
  • 156