How Gravitational Lensing Works (IMAGE)

NASA/Goddard Space Flight Center

How Gravitational Lensing Works

Caption

This diagram illustrates how rays of light from a distant galaxy or star can be bent by the gravity of an intervening galaxy cluster. As a result, an observer on Earth sees the distant object appear brighter than it would look if it weren't gravitationally lensed.

Credit

Credits: NASA, ESA, and A. Feild and F. Summers (STScI)

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