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Astronomy

Gravitational Lensing: Bending Light Across the Universe

Quick fact

A single galaxy cluster can magnify a distant galaxy by up to 50 times, revealing details invisible to even the most powerful telescopes.

Why this is interesting

When you look through a glass lens, light bends. In space, entire galaxies do the same—bending light from more distant objects. How can gravity create a cosmic magnifying glass?