Question

Which statement accurately describes dark matter?

1: It is the same as dark energy.
2: It is well understood by scientists.
3 :It does not emit electromagnetic radiation.
4: It can be observed by shifts in red and blue light.

Answer 1

1

Step-by-step explanation:

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Description

Dark matter is a form of matter thought to account for approximately 85% of the matter in the universe and about a quarter of its total mass–energy density or about 2.241×10−27 kg/m3. .