Explain how scientists know that the universe is expanding

Question

Christine Dickerson

Biology

30 October, 15:44

Explain how scientists know that the universe is expanding

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Answers (2)

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Krista Wilkerson · Answer 1

For every million parsecs of distance from the observer, the rate of expansion increases by about 67 kilometers per second. The Hubble parameter is not thought to be constant through time. There are dynamical forces acting on the particles in the universe which affect the expansion rate.

Jacqueline Edwards · Answer 2

For every million parsecs of distance from the observer, the rate of expansion increases by about 67 kilometers per second. The Hubble parameter is not thought to be constant through time. There are dynamical forces acting on the particles in the universe which affect the expansion rate.