What year did people on Earth see the Crab Nebula explode?
A.) 1993.
B.) 1877.
C.) 1054.
D.) 108 B.C.
E.) Around 2,300 B.C.
Ans: C.) 1054.
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Fill in the blank(s) with the appropriate word(s).
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a year of exactly 365 days a year of exactly 360 days a year that is skipped in the Julian calendar a year of exactly 366 days