All the following events are likely to generate observable gravitational waves EXCEPT ONE. Which one is the exception?

Name: All the following events are likely to generate observable gravitational waves EXCEPT ONE. Which one is the exception?
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Question

Quizplus · Accepted Answer

A 1-M ε star falling into a black hole is not likely to generate observable gravitational waves because it is too small and its gravitational effects would be too weak. The other events listed are all known to generate observable gravitational waves.

All the Following Events Are Likely to Generate Observable Gravitational