Today only 30 percent of galaxies contain active galactic nuclei.
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Q2: Astronomers believe that all giant galaxies probably
Q4: Dark matter is distributed inside galaxies in
Q5: Star formation in spiral galaxies happens only
Q6: We know that spiral galaxies contain dark
Q6: We classify galaxies by
A) their true shapes.
B)
Q8: The Hubble tuning fork diagram (figure below)represents
Q8: Any asymmetry in the gravity field of
Q12: Seyfert galaxies are unique because they have
Q12: The 3-dimensional shape of an elliptical galaxy
Q13: Approximately _ of spiral galaxies are barred.
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