Starburst galaxies
A) contain a large number of very young stars, but very little evidence of gas clouds.
B) contain a large number of very old stars and almost no gas or dust.
C) are often associated with a galaxy that is colliding with another galaxy.
D) are common in rich clusters.
E) are composed of filaments and voids.
Correct Answer:
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Q17: A mega-parsec (Mpc) is equivalent to
A)3.26 light-years.
B)206,265
Q18: A megaparsec is equivalent to
A)3.26 light-years.
B)206,265 AU.
C)the
Q19: Galactic cannibalism refers to
A)binary galaxies.
B)the merging of
Q20: Astronomers now speculate that a galaxy's shape
Q21: What distance method is used to determine
Q23: What distance method did Edwin Hubble use
Q24: What is the primary factor in determining
Q25: If H equals 70 km/s/Mpc, then a
Q26: If a galaxy has a radial
Q27: Supermassive black holes are believed to be
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