We have always assumed that a vacuum has zero matter in it, but does it? If there is less dense space than the vacuum in our solar system and beyond, then that might explain how objects can speed up on their own in the outer galaxy (you know, conservation of momentum). Comments?
2007-03-09 08:18:13 · 6 answers · asked by Susan E 1 in Science & Mathematics ➔ Astronomy & Space
Vacuum in space actually has some particles in it, so an absolute vacuum would be less dense. Dark matter doesn't change this.
2007-03-09 08:35:07 · answer #1 · answered by Jonathan S 2 · 0⤊ 0⤋
Dark matter is an invention of scientists to try to explain some thing that may not exist.
If a rotating galaxy is not a satellite system dark matter may not be needed to keep it from flying apart.
A vacuum is the exhaustion of matter from an area of space.
Space may have varying densities.
A thirty-billionths of a second after the big bang,space may have been at it's densest.
Interstellar or intergalactic space may be varying degrees of spacial density.
The emergence of matter could have been the means reducing the density of space,and may even be the mechanism of the demise of the universe.
2007-03-10 02:01:36 · answer #2 · answered by Billy Butthead 7 · 0⤊ 0⤋
The secret word is THEORY! A THEORY is an unprovable assumption with no basis in fact or reality. Almost all theories are based in science fiction, not science fact. Black holes, worm holes, dark matter, anti-matter, are not real. Global warming is not anything that can be fixed, stopped, or reversed, so quit worrying about it, too.
Space is empty with random and widely spaced clusters of matter and dispersed gases.
If somebody made some anti-matter, what would you keep it in?
2007-03-09 09:45:07 · answer #3 · answered by Anonymous · 0⤊ 0⤋
I think probably "nothing" before the big bang was nothing so that is less dense than the vacumm of the outer space, the vacumm of the outer space it has no materia except for the planets,stars,comets etc etc but still has something that is time and distance but when there is nothing you don't have nothing nothing.
2007-03-09 08:27:47 · answer #4 · answered by Santiago Beau.. 2 · 0⤊ 0⤋
Dark matter really doesn't shed much light on anything.
Since we have defined a vacuum as the absence of all matter, dark matter must be excluded, as well.
2007-03-09 09:04:33 · answer #5 · answered by Helmut 7 · 0⤊ 0⤋
New theories in cosmology suggest that there is no empty (vacuum) of space.
Check it out for yourself.
http://video.google.com/videoplay?docid=4773590301316220374
2007-03-09 09:21:30 · answer #6 · answered by Anonymous · 0⤊ 0⤋