Measurements show a certain star has a very high luminosity (100,000 x the Sun's) while its temperature is quite cool (3500o K) . How can this be?
A) it must be a main sequence star
B) it must be quite small in size
C) it must be quite large in size
D) it must be brown dwarf and not a regular star
E) this must be an error in observations; no such star can exist
Correct Answer:
Verified
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