Even Einstein Doubted His Own Gravitational Waves

Even before LIGO published its fifth detection this week, most modern scientists had already accepted gravitational waves as an observable manifestation of Einstein’s general relativity. But that hasn’t always been the case.

As recently as the 1970s, scientists weren’t sure gravitational waves were strong enough to detect. Other theorists rejected their existence outright. 
Unsure Genius
Interestingly, Einstein himself was a prominent doubter. In 1936, twenty years after he introduced t

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