The "big bang" refers to the origin of
A) the sun.
B) the solar system.
C) our galaxy.
D) the universe.
Correct Answer:
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Q27: In the past several billion years the
Q28: Information about the origin of the universe
Q29: The proportionality between the recession speeds of
Q30: In a "closed" universe
A) expansion of the
Q31: Considering matter and energy together, the smallest
Q33: Quasars
A) are weak sources of light and
Q34: Galactic spectra show
A) red and blue shifts.
B)
Q35: In the light of current evidence, a
Q36: The galaxies in the universe are distributed
A)
Q37: Primary cosmic rays are produced
A) in the
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