2007-03-02 22:10:24 · 4 answers · asked by melbournewooferblue 4 in Science & Mathematics ➔ Physics
If dark matter turned out not to exist, we would have to rethink everything we thought we knew about astronomy and/or physics.
We have deduced that it must exist, because without it, galaxies would fly apart, clusters of galaxies would not have sufficient mass to bend the light of more distant galaxies in the way we see, and there would be no explanation for the observed expansion of the universe. Either that, or everything we think we know about the laws of physics would be wrong!
2007-03-03 00:13:52 · answer #1 · answered by Rando 4 · 0⤊ 0⤋
Dark matter is just the name for the substance that fills the universe and we can't detect - but we KNOW that it exists. We have plenty of evidence for this - from gravitational evidence in galaxies (see Vera Rubin's work) to the newest findings on dark matter in galactic clusters. It has to be there.
2007-03-03 06:27:50 · answer #2 · answered by eri 7 · 0⤊ 0⤋
Dark matter almost certainly does not exist. It is a place holder concept. What if blahs do not exist? If can answer my question, then you have answered yours.
2007-03-03 16:52:00 · answer #3 · answered by Fred 7 · 0⤊ 0⤋
But its been measured.
So it must exist.
Its existence is not speculative.
2007-03-03 06:23:24 · answer #4 · answered by Anonymous · 0⤊ 0⤋