The Sun formed from the gravitational collapse of a cold __________.
A) red giant
B) planet
C) planetary nebula
D) interstellar cloud
Correct Answer:
Verified
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
Q11: A protostar becomes a main sequence star
Q12: The typical temperature of an interstellar cloud
Q13: Protostars are observable by radio telescopes but
Q14: A _ is a region where jets
Q15: In the H-R diagram a T Tauri
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