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Vitor Abella · Answer 1 · 2019-12-11T18:16:36+0000

(in some cosmological theories) nonluminous material that is postulated to exist in space and that could take any of several forms including weakly interacting particles ( cold dark matter ) or high-energy randomly moving particles created soon after the Big Bang ( hot dark matter

Gad D Lord · Answer 2 · 2019-12-12T22:21:54+0000

Dark matter is an unknown substance that is only detectable by the gravity it exerts. Dark matter makes up 23% of the universe.

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