Mark M. answered • 06/06/16
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B. Called the Doppler Effect.
Amanda K.
asked • 06/06/16HELPPPPPP!
Edwin Hubble calculated the expansion rate of the universe. On what evidence did he base his calculation?
A. Levels of background radiation
B. Differences in redshift for galaxies
C. The existence of planets outside of our solar system
D. Levels of helium in the universe
A. Levels of background radiation
B. Differences in redshift for galaxies
C. The existence of planets outside of our solar system
D. Levels of helium in the universe
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David W.
06/06/16