Multiple Choice
What is a superbubble?
A) a very low-density region of interstellar space,formed by the merger of several bubbles
B) a very high-density region of interstellar space,filled with gas ejected from nearby star systems
C) a bubble so large that it fills much of the galactic halo
D) the region of space cleared by a powerful supernova
E) a cloud of gas that can form a million or more stars
Correct Answer:
Verified
Correct Answer:
Verified
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