Multiple Choice
What is a standard candle?
A) an object for which we are likely to know the true luminosity
B) an object for which we can easily measure the apparent brightness
C) a class of objects in astronomy that all have exactly the same luminosity
D) any star for which we know the exact apparent brightness
E) a long,tapered candle that lights easily
Correct Answer:
Verified
Correct Answer:
Verified
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