Multiple Choice
If a supernova was first seen in 1572 C.E. and its distance from Earth is measured to be 2 kpc, approximately when did the supernova actually explode?
A) 1572 B.C.E.
B) 4968 B.C.E.
C) 428 B.C.E.
D) 4968 C.E.
Correct Answer:
Verified
Correct Answer:
Verified
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