The total mass of galaxies in a cluster of galaxies divided by the number of galaxies in the cluster can be used to determine a typical galaxy's ___________.
A) luminosity
B) distance
C) mass
D) diameter
E) age
Correct Answer:
Verified
Q3: Gravitational lensing
A)occurs when light passes near a
Q4: _ can be used to determine the
Q5: _ have elongated nuclei with spiral structure
Q6: The look-back time is
A)the time it takes
Q7: Mathematical models indicate that _ galaxies are
Q9: Poor clusters
A)contain more than 1000 stars and
Q10: A _ generally contains well over 1000
Q11: Most of the mass of a galaxy
Q12: The mass of a single galaxy might
Q13: _ galaxies contain large clouds of gas
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