If the Redshifts of Quasars Arise from the Expansion of the Universe

question 13

Multiple Choice

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

• A)be very small.
• B)be within the Local Group.
• C)be 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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German Measles

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Rubella

A contagious viral infection best known for its distinctive red rash.

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Zygote

The initial cell formed when a new organism is produced by sexual reproduction, resulting from the union of an ovum and a sperm.