Multiple Choice
Black holes,by definition,cannot be observed directly.What observational evidence do scientists have of their existence?
A) Theoretical models predict their existence.
B) Gravitational interaction with other objects.
C) Space is,overall,very black.
D) We have sent spacecraft to nearby black holes.
E) We have detected neutrinos from them.
Correct Answer:

Verified
Correct Answer:
Verified
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