About how long will a 0.5- 
star spend on the main sequence?
A) 6 billion years
B) 62 billion years
C) 620 million years
D) 6 million years
E) 600 thousand years
Correct Answer:
Verified
Q3: The Crab nebula is
A)a planetary nebula.
B)a Bok
Q14: Which of the following nuclear fuels does
Q15: Mass is transferred from a normal star
Q16: In the diagram below, which point indicates
Q20: A(n) _ is a collection of 105
Q24: A planetary nebula has a radius of
Q25: Synchrotron radiation is produced
A)in planetary nebulae.
B)by red
Q26: The diagram below shows a light curve
Q36: The Algol paradox is explained by considering
A)the
Q37: Synchrotron radiation is produced by
A)objects with temperature
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