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.
Correct Answer:
Verified
Correct Answer:
Verified
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