The existence of gravitational waves was first suggested observationally by measurements of
A) a binary pulsar.
B) a black hole merger.
C) Type II supernovae.
D) gamma-ray bursts.

Question

Quizplus · Accepted Answer

The existence of gravitational waves was first suggested observationally by measurements of a binary pulsar, specifically the Hulse-Taylor binary pulsar discovered in 1974. This system provided indirect evidence of gravitational waves through the observed decay in its orbital period, which matched predictions from general relativity.

The Existence of Gravitational Waves Was First Suggested Observationally by Measurements