Multiple Choice
The Andromeda Galaxy (M31) is BEST described as a(n)
A) spiral collection of stars, dust, and gas, 200,000 ly across.
B) extension of the Milky Way.
C) vortex surrounding a black hole.
D) gaseous nebula extending for 6° across Earth's sky.
Correct Answer:

Verified
Correct Answer:
Verified
Q129: In the self-propagating star formation theory<br>A) spiral
Q130: According to the Hubble classification scheme, an
Q131: What method is used to determine the
Q132: Collisions between galaxies<br>A) do not occur because
Q133: The total number of galaxies in a
Q135: An astronomer studying a distant galaxy finds
Q136: What is a barred spiral galaxy?<br>A) galaxy
Q137: An astronomer studying a cluster of galaxies
Q138: What is astronomers' present belief about the
Q139: Much of the mass in galaxies and