2006-11-13 14:13:49 · 4 answers · asked by goring 6 in Science & Mathematics ➔ Physics
Space is not empty nor is it mostly empty. Just because you don't see what is between one galaxy and another does not make space empty. Most of the matter that makes up the universe is not visible. Therefore the apperant emptiness of space.
2006-11-13 17:14:28 · answer #1 · answered by G Constant 2 · 1⤊ 0⤋
The space that fills the universe is not a vacuum in the absolute sense. A vacuum is defined as the absence of any matter within the given volume. But space, even between the galaxies, is not completely empty. It may be almost empty, but not completely.
As the universe expands, it carries the space and everything in it with it - sort of stretching space to fill the expanding volume.
2006-11-13 22:17:41 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Hi. That is a big question. Vacuum itself does not have to expand, only the distance between particles.
2006-11-13 22:16:14 · answer #3 · answered by Cirric 7 · 0⤊ 0⤋
Space isn't a vacuum.
2006-11-13 22:15:25 · answer #4 · answered by JBarleycorn 3 · 1⤊ 0⤋