Question: If a star that is 20 light-years from Earth explodes, gravitational waves from the explosion would reach Earth in (a) less than 20 years. (b)

If a star that is 20 light-years from Earth explodes, gravitational waves from the explosion would reach Earth in

(a) less than 20 years.

(b) 20 years.

(c) more than 20 years.

(d) None of these.

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