Author Question: Galaxies are aggregations of stars, stellar dust, and gas. Their masses A) are all about the ... (Read 30 times)

LaDunn · **on:** Jul 29, 2018

Galaxies are aggregations of stars, stellar dust, and gas. Their masses

A) are all about the same, which is huge.
B) vary greatly from one galaxy to the next.
C) are small compared to blue supergiant stars.
D) depend on the rate of pulsar emissions within them.

Question 2

The Milky Way galaxy is

A) in the process of colliding with the Magellanic Cloud galaxies.
B) where Earth resides.
C) a spiral galaxy.
D) All of the above