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OK, looking at the comments, I have to note that Dark Matter[1] and Dark Energy[2] are two different but related hypotheses. The basic existence of Dark Matter
by joe_the_user 7y ago
OK, looking at the comments, I have to note that Dark Matter[1] and Dark Energy[2] are two different but related hypotheses. The basic existence of Dark Matter is on a fairly strong footing experimentally and afaik this article doesn't cast doubt on its existence (it has been observed, on the cosmic scale, as accurately as many form ordinary matter, for example). Again, this is the dark energy issue. Just sayin'
[1] https://en.wikipedia.org/wiki/Dark_matter https://en.wikipedia.org/wiki/Dark_matter
[2] https://en.wikipedia.org/wiki/Dark_energy https://en.wikipedia.org/wiki/Dark_energy
- mikhailfranco 7y ago'Dark Matter' is physicist code for: gravitating stuff that we cannot see. 'Dark Energy' is physicist code for: anti-gravitating non-stuff that we cannot see. (i.e. Dark Energy, aka Einstein's Cosmological Constant, is a property of the vacuum.)
- gus_massa 7y agoAnother important difference is that: Dark Matter is not uniformly distributed, for example if forms big blobs that surround the visible parts of the galaxies. Dark Energy is uniformly distributed, but the (equivalent?) density is very small, so the effect is important in the very empty space between galaxies.