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Astronomy

Gravitational Lensing

Quick fact

Gravitational lensing allowed the Hubble Space Telescope to capture the most distant galaxy ever observed, GN-z11, by magnifying its light over 13.4 billion years.

Why this is interesting

You've seen a glass lens bend light to focus an image — but what if an entire galaxy could do the same? Gravitational lensing turns galaxies and galaxy clusters into nature's most powerful telescopes.