Einstein

How ‘Gravitational Lensing’ Made One Supernova into Four—‘Einstein Cross’

Nicknamed the “Einstein Cross” after the famous physicist who predicted the possibility of the phenomenon as a result of his theory of relativity more than a century ago, the formation was made possible by a strange occurrence known as gravitational lensing. When a galaxy or cluster is large enough, they can often bend light that passes through it. And when they are rather perfectly aligned with Earth, even small events too far to be seen can be magnified so that researchers are able to detect them.

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