Why didn't they see flickering brightness that would show black holes were eating gas from mergers?
A: The earliest light went away from the galaxy in a different direction.
B: Because black holes themselves didn't exist until much later.
C: There's a delay between the merger and time gas and stars flow into black hole.
D: Black holes need billions of years to grow large enough to swallow whole stars.
E: Because mergers do not produce new stars and tend to disperse all gas in the region.
Ans: C: There's a delay between the merger and time gas and stars flow into black hole.
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