Multiple Choice
The study of stars in clusters has helped astronomers to understand
A) the reason for differences in surface temperatures of stars.
B) the mechanism of mass loss in stars.
C) the action of nuclear fusion in stars.
D) stellar evolution-the development of stars with time.
Correct Answer:
Verified
Correct Answer:
Verified
Q100: What "safety valve" operates in the gas
Q101: Heavy metals from the expulsion of elements
Q102: Emission nebulae are glowing,ionized clouds of gas,powered
Q103: A star first reaches the main sequence
Q104: New stars are formed<br>A) in huge,cool dust
Q106: An asymptotic giant branch (AGB)star is a<br>A)
Q107: When a star leaves the main sequence
Q108: How do massive protostars (4 solar masses)evolve
Q109: A particular giant molecular cloud has a
Q110: Stars join the main-sequence group when they<br>A)