If the Red Shifts of Quasars Arise from the Expansion

question 21

Multiple Choice

If the red shifts of quasars arise from the expansion of the universe yet they have brighter magnitudes than galaxies with the same red shifts, the quasar must be

• A) very small.
• B) within the Local Group.
• C) a single star with an extremely large mass.
• D) be moving toward Earth with a large radial velocity.
• E) emit a very large amount of energy per second.

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