What does an irregular galaxy contain?
A) mostly lower main-sequence stars and giants
B) mostly upper main-sequence stars and giants
C) mostly upper main-sequence stars and gas and dust
D) upper and lower main-sequence stars and gas and dust
Correct Answer:
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Q3: What does the term "galactic cannibalism" refer
Q4: Which of the following best describes poor
Q5: What type of galaxy has an elongated
Q6: Which of the following are produced when
Q7: What is look-back time?
A)the time it takes
Q9: What evidence leads astronomers to conclude that
Q10: Mathematical models indicate that one type of
Q11: If you wanted to measure the distance
Q12: If a disk galaxy is reasonably close
Q13: What does an elliptical galaxy contain?
A)mostly lower
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