For a star like the Sun, the gravitational collapse of the interstellar cloud lasted for about ______________ and stopped with the ignition of the fusion reaction.
A) 50-100 billion years
B) 5-10 billion years
C) 1 billion years
D) 100 million years
E) 1-10 million years
Correct Answer:
Verified
Q1: The most important property that determines the
Q3: _ is the most significant force that
Q4: Why does a high-mass star evolve differently
Q5: The Sun's evolution from youngest to oldest
Q6: Brown dwarfs are
A) large terrestrial planets.
B) objects
Q7: When do we say that a star
Q8: What stars form the slowest?
A) O and
Q9: Protostars shine brightest in
A) radio waves.
B) infrared
Q10: The Sun formed from the gravitational collapse
Q11: A protostar becomes a main sequence star
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