Multiple Choice
The most likely places in which stars and planetary systems are forming in the universe are
A) the rarified outer space between galaxies.
B) regions of hot gas in the spiral arms of galaxies.
C) gas and dust nebulae.
D) the centers of galaxies.
Correct Answer:

Verified
Correct Answer:
Verified
Q71: When an average-sized star reaches the end
Q72: Over time,the turnoff point (the upper end
Q73: The stars that have the longest lifetimes
Q74: How is gas distributed in interstellar space?<br>A)
Q75: During short-lived bursts called thermal pulses,stars begin
Q77: Why does helium fusion require much higher
Q78: Stars in a second red-giant phase are<br>A)
Q79: The stellar remnant left at the end
Q80: What is the most abundant element in
Q81: Stars spend the majority of their lives<br>A)