Question

what is dark matter? please answer this question

Answer 1

Dark matter: Non-luminous material which is postulated to exist in space which could take either of two forms: weakly interacting particles (cold dark matter) or high energy randomly moving particles (hot dark matter).
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Answer 2

Dark matter is a type of matter that may constitute about 80% of the total matter in the universe. It has not been directly observed, but its gravitational effects are visible in a variety of astrophysical observation

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