It is believed that ring galaxies form
a. when two galaxies collide at high speeds.
b. when two spiral galaxies collide, but not directly head on.
c. from a large cloud of gas and dust with very little angular momentum.
d. from a large cloud of gas and dust with a very high angular momentum.
e. when more than two galaxies collide at the same time.
Question 2
If a star's temperature increases in its interior, then more nuclear reactions will occur to push the star outward and its temperature will drop, causing the star to contract and eventually return to equilibrium.
a. True
b. False
Indicate whether the statement is true or false
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