Multiple Choice
Quasars in our universe are:
A) relatively common. Over 10,000 have been identified so far.
B) relatively rare. Only about 500 have been detected so far.
C) rare. Only about 10 have been positively identified as such by their properties.
D) extremely common. At least 1 million have been catalogued so far.
Correct Answer:
Verified
Correct Answer:
Verified
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