The Key to Finding Quasars' Distances Was

question 45

Multiple Choice

The key to finding quasars' distances was

• A) globular clusters in the halo of M87 in Virgo.
• B) planetary nebula in M51.
• C) a Type I supernova in the spiral arm of 3C87.
• D) the luminosity of 3C52 from the Doppler shift and the Fisher- Tully relation.
• E) the huge redshifts of the hydrogen lines in 3C273.

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