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That's why I don't like the use of "weight" in this thread, cheyenne: the weight of the earth is determined by the gravitational forces 'holding it into place', just like your weight on the earth is determined by the gravitational forces of our earth. This doesn't influence the mass of the earth, but it indeed influences the weight of the earth. Therefore, the weight of the earth depends on your point of view (literally): the weight of the earth seen from the standpoint of the moon is different than the weight of the earth seen from the standpoint of the sun, etc. etc...
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Your right cheyenne1212, it doesn't wiegh at all, but it has one hell of alot of mass.
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Since Mass is the size of an object though, then mass doesn't actually weigh anything if it is in space? right?
I'm starting to become lost.
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cheyenne1212 you are confusing size and mass. If you have two balls the exact same size, but one was made of wood and the other of lead....the lead ball would have the greater mass.
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Right, I understand that part.
So when we ask the weight of the earth, we are actually asking what is the density of earth? Since earth doesn't actually weigh?
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Thats right. The mass of the earth directly affects its gravitational pull. The mass of the moon likewise. If you increased the mass of the moon significantly, the tides here on earth would be directly affected, as its gravitatioal pull would also be affected. If you increased it enough, you would cause major disastors here on earth, and it could even affect the other planets also. Our solar system is a balenced system, and to significantly change the mass of any part would cause havack with the rest of the system.
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Yes, things from space come to earth.
Our atmosohere escapes into space
It gives us a small margin for change.... not to mention things we've sent into space.
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But the things that we send into space, that wouldn't be considered part of earths mass would it, as it isn't actually part of earth?
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Aren't we all cool scientists here. :p
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...
Okay, where do you get metal?
