What does a spiral (S or SB) galaxy contain?
A) mostly lower main-sequence stars and giants
B) upper and lower main-sequence stars, gas and dust
C) mostly upper main-sequence stars, gas and dust
D) mostly upper main-sequence stars
Correct Answer:
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Q13: What does an elliptical galaxy contain?
A)mostly lower
Q14: Which of the following generally contain well
Q15: How might the mass of a single
Q16: What is a mega-parsec equivalent to?
A)3.26 light
Q17: What information about a cluster of galaxies
Q19: Where is most of the mass of
Q20: The Hubble Law describes a relationship between
Q21: Based on statistical studies,what is the most
Q22: What is the Hubble constant essentially a
Q23: If a galaxy has a radial velocity
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