Question

what is Dark matter
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Answer 1

Explanation:

Dark matter is a form of matter thought to account for approximately 27% of the matter in the universe and about 27% of its total mass–

Answer 2

Answer:

Dark matter is composed of particles that do not absorb, reflect, or emit light, so they cannot be detected by observing electromagnetic radiation. Dark matter is material that cannot be seen directly. ... Scientists believe that dark matter may account for the unexplained motions of stars within galaxies.

Dark matter is a form of matter thought to account for approximately 27% of the matter in the universe and about 27% of its total mass–energy density or about 2.241×10−27 kg/m3.

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