Is the density of space homogeneous inside the containment of the Universe?
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answers:
hcbiochem say: No, it isn't. Stars, planets, black holes and you exist, and the density of all of these is much greater than the majority of space in the universe. You could calculate an average density, but some parts of the universe will have greater and others smaller densities.
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Adullah M say: The problem is that what is actually being filled in the space of the universe.
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Jeffrey K say: How do you define the density of space? Do you mean the density of matter within space? It is not smooth. There are lumps of great density called stars and galaxies and superclusters.
The universe has no containment.
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CarolOklaNola say: No, it is NOT.
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Rowan say: The density of the stars and galaxies fluctuates, there's an unknown force called dark energy which they believe must be there because the universe seems to be expanding faster, but they really don't know anything about it, because the pushing force it has may be affecting our measurements of gravity, because you couldn't tell how much of it has what effect compared to the opposite force, at what distance. They can try to work it out, my view is they haven't done a very good job. They sometimes say they think it will increase in density, this unknown thing, and that it doesn't work like any known form of energy. This is of course based on no observable evidence, and my view is that it is a form of energy, like any other, just like air bouncing around in a balloon, the balloon being gravity. All energy has gravity, but this is like sub atomic particles moving at the speed of light. I reckon they would get sucked into black holes, and have their path altered by gravity, like light. So when the stars burn out, and turn into black holes, they would get sucked into these, removing propulsion and turning it into gravity, which would slow the expansion and cause it to collapse, after the big freeze. I don't believe black holes just evaporate, Hawking radiation is also an unproven theory.
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Bulldog redux say: Nothing is "contained" in the universe. The universe isn't like a box or bottle.
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Morningfox say: I just love the way you are stuck on this "containment of the universe" thing. I would guess that English is not your most favorite language, because nobody else uses that phrase.
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