Multiple Choice
What does a spiral galaxy look like when seen edge-on?
A) a thick, straight line of light with a central light bulge
B) circular, with no evidence of spiral arms since they are hidden by dust and gas
C) a thick line curved into a spiral shape
D) a thick, straight line with constant thickness
Correct Answer:

Verified
Correct Answer:
Verified
Q26: What mechanism is believed to produce grand-design
Q38: According to the theory of self-propagating star
Q43: Seyfert galaxies are a distinct class of
Q76: According to the Hubble classification scheme, an
Q82: The idea that some of the nebulae
Q107: What fraction of the mass of the
Q108: What is the Hubble classification for a
Q110: What do we know about the geometry
Q113: If interstellar dust obscures our view of
Q114: Which single major problem perhaps puzzles astronomers