Astronomers use galactic redshift to estimate
A) gravity.
B) luminosity.
C) star counts.
D) mass.
E) distance.
Correct Answer:
Verified
Q30: A certain spectral line of rest wavelength
Q31: According to Hubble's law, as the distance
Q32: Why can Type Ia supernovae be used
Q33: If a galaxy has an apparent velocity
Q34: The rotation curve of a galaxy is
Q36: You read about the discovery of quasars
Q37: Type Ia supernovae have a peak luminosity
Q38: The spectra of most galaxies tell us
Q39: If you found a galaxy with
Q40: The nearest known quasar shows a redshift
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