Multiple Choice
Which observation has provided the MOST direct evidence that Type II supernovae are caused by the collapse of the core of a massive star?
A) detection of high-energy X-rays from the Crab supernova remnant
B) detection of iron in the Cassiopeia A supernova remnant
C) detection of neutrinos from supernova 1987A
D) discovery of cosmic rays
Correct Answer:
Verified
Correct Answer:
Verified
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