it depends on the factors that arise during geomatic forces that the lantary spaces vibrate at. Many planets move at a smmmmmaller pace b/c of their mass. Alsp, the gravity constent of the universe is divided by the g-force gravitatinal pull of the star galaxie.
2006-07-18 17:04:51
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answer #1
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answered by Anonymous
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The Earth spins much like every other planet, star, and other celestial objects due to an uneven mass concentration throughout the "sphere". The Earth is actually more egg-shaped than anything. Gravity from the other planets and the Sun and the Moon all cause perturbations in Earth's motion. The Earth very slowly is spinning at a different rate as time passes due to these perturbations.
This is the same reason we always see the same side of the Moon. The largest portion of the Moon's mass is on the side that faces us. As Earth pulls on it, it pulls the largest side as there is the most attraction due to newton's inverse-square law of gravity... This is not to say the Moon doesn't spin. It does, in fact spin, but it has reached an equilibrium in its orbit and technnically "rolls" around the Earth at just the right rate for us to only see one side of it.
2006-07-18 16:08:27
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answer #2
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answered by AresIV 4
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Essentially, the earth spins because it has always been spinning. Like a top or a gyroscope that keeps spinning until friction slows it down, the earth maintains its rotational inertia except that there is no friction to speak of so it doesn't slow down.
(I don't have the time to debunk the several misconceptions in arwyayen23's answer, but let me also just point out that the mass distribution of the earth has nothing to do with it, and it's not true that the "heavy" side of the moon faces the earth.)
2006-07-18 16:22:06
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answer #3
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answered by kscaldef 1
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The "hypothesis" (meaning the BEST guess, because there is no certain answer on this subject in science) is that the Earth is still spinning from its creation. We know that it is slowing down over the Millenia and may one day stop in the far, far future. However, more likely, the Sun will have swallowed the earth by then by expanding as a Super red star in around 5 Billion years.
So while we're not sure, we believe its from the earths creation. The atmosphere, the sun and moon and travel around the sun also effect its speed.
2006-07-18 16:57:59
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answer #4
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answered by AdamKadmon 7
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Please disregard everything Arwyayen said, that is utter garbage.
The earth spins because of the forces involved in the creation of our solar system. Imagine a vast cloud of hydrogen and a sprinking of other heavier elements gradually coalescing. If the cloud is even slightly asymmetrical, the gas particles will not "fall" directly towards to mass-center of the cloud, but just off center instead.
On average, the particles will just barely miss the center, and then be drawn back again. This motion imparted the early solar system with it's spin, which is evidenced by the spin of the planets, thier moons, and the sun itself (the spin is slight, and varies through the surface and depth of the sun). Incidentally, every planet and moon is orbiting and spinning in the same orientation.
2006-07-18 16:29:36
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answer #5
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answered by Argon 3
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In the center of the earth, there is this giant hamster wheel and an equally large hamster who runs and runs and....
It sounds a lot better than gravational pull, both from the sun and within our planet from the big bang.
2006-07-18 16:46:02
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answer #6
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answered by Anonymous
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it's all about the the dance of energy from the macrocosm to the microcosm
2006-07-18 16:15:26
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answer #7
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answered by Anonymous
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It rotates on its axis
2006-07-18 18:41:53
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answer #8
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answered by Carol H 5
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