Multiple Choice
Recent observations indicate that the universe is expanding faster today than it was a few billion years ago (that, in other words, the expansion of the universe is accelerating.) What kind of observations have led astronomers to this surprising conclusion?
A) the measurements of cepheid variables in the galaxies of the Local Group
B) the measurement of galaxy distances using Type Ia supernovae
C) the discovery of large amounts of dark matter in the halo of the Milky Way
D) the measurements of the amount of deuterium in the universe
E) the fact that galaxies today are getting a lot more speeding tickets than they used to
Section 29.3: The Beginning of the Universe
Correct Answer:
Verified
Correct Answer:
Verified
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