Cosmological redshift is redshift due to
A) the true velocity of a receding galaxy.
B) the cosmic microwave background radiation.
C) the expansion of the space that light travels through.
D) the higher abundance of hydrogen present in older galaxies.
E) light interacting with dark matter.
Correct Answer:
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Q17: Galaxies move away from us in all
Q18: As measured from Earth, the spectrum of
Q19: Astronomers use galactic redshift as a measure
Q20: Hubble's constant, H0, represents the
A) rate of
Q21: Galaxy peculiar velocities are typically about 300
Q23: If the distance of a galaxy is
Q24: The inverse of the value of H0
Q25: You observe the following three galaxies and
Q26: The figure below uses a rubber sheet
Q27: Will the increasing scale factor of the
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