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Re:New research: Dark Energy might not exist after all by mikhailfranco on Thursday November 28, 2019 @11:38PM (#21662090)
'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.)

Re:New research: Dark Energy might not exist after all by gus_massa on Friday November 29, 2019 @01:23PM (#21665932)
Another 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.