Gravitational lens

A gravitational lens is formed when the light from a very distant, bright source (such as a quasar) is "bent" around a massive object (such as a massive galaxy) between the source object and the observer.

Related Topics:
Quasar - Galaxy

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The process is known as gravitational lensing, and was one of the predictions made by Einstein's general relativity.

Related Topics:
Predictions - Einstein - General relativity

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