I just asked a question about the dimensions of 3-D space at the moment of the. Big Bang. Thank you -- all who answered. Does the expansion of space, along with the matter in space imply that space is actually subject to gravitational force? If it is, why don't black holes suck up 3-D space like a vacuum? Also, if space is "expanding" then it seems that it should be expanding equally at all points; as opposed to just adding more space at the edge of the universe; why have we not seen any evidence of this in any laboratory experiment?
Space is subject to gravity?hack myspace
Gravity affects the metrical properties of space (its "curvature"), but it doesn't pull on it as if it were a material thing. And, yes, the average expansion of space (that is, averaged over a scale of millions of light years) is assumed be the same thoughout the universe. The "local" expansion of space can prevented by higher concentrations of mass, such as you would have inside of a galaxy. (Which is really just a fancy way of saying that gravity is strong enough to hold relatively dense objects like galaxies togother, but not the universe as a whole).
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