If H equals 50 km/sec/Mpc,then a galaxy with a radial velocity of 2000 km/sec probably has a distance of
A) 2050 Mpc
B) 1950 Mpc
C) 40 Mpc
D) 0.025 Mpc
E) 100,000 Mpc
Correct Answer:
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Q6: Galactic cannibalism refers to
A) binary galaxies.
B) the
Q7: An irregular galaxy contains
A) mostly lower-main sequence
Q8: Astronomers now speculate that a galaxy's shape
Q9: A megaparsec is equivalent to
A) 3.26 light-years.
B)
Q10: We should expect galaxies to collide with
Q12: If a galaxy has a radial velocity
Q13: The mass of a single galaxy might
Q14: An E galaxy contains
A) mostly lower-main sequence
Q15: The most massive galaxies are
A) spiral galaxies.
B)
Q16: Super massive black holes in galaxies
A) are
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