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How can gravitational lensing be used to find planets?  | HIX Tutor

A light travels from its source when it passes by any object of substantial gravity it bends around that object, hence the lensing effect. This is also how <a href="https://socratic.org/astrophysics/general-relativity/black-holes">black holes</a> are discovered.

A light travels from its source when it passes by any object of substantial gravity it bends around that object, hence the lensing effect. This is also how black holes are discovered.

When they pass in front of them, the light bends.

Nolan Aldridge

Gravitational lensing can be used to find planets through a technique called microlensing. When a planet passes in front of a distant star, it temporarily magnifies the light from the star, causing a brief increase in brightness. This effect allows astronomers to detect the presence of planets around stars in distant galaxies, even if the planets themselves are not directly visible.