What Is the Primary Form of Evidence That Has Led

question 102

Multiple Choice

What is the primary form of evidence that has led astronomers to conclude that the expansion of the universe is accelerating?

• A)observations of the speeds of individual galaxies in clusters
• B)measurements of the rotation curve for the universe
• C)measurements of how galaxy speeds away from the Milky Way have increased during the past century
• D)observations of white dwarf supernovae

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