AST-468intermediate

Gravitational Lensing, Redshift & Time Dilation: Physical Mechanisms

Curved spacetime changes the paths of light and the rates of clocks. These effects map dark matter, measure galaxy-cluster mass, discover exoplanets through microlensing, test relativity, correct navigation systems, and probe compact objects.

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intermediate50 minFact checked

Gravitational Lensing, Redshift & Time Dilation: Physical Mechanisms

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AST-467Gravitational Lensing, Redshift & Time Dilation: Structures & Vocabulary→

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AST-469Gravitational Lensing, Redshift & Time Dilation: Observation, Measurement & Evidence→

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Curved spacetime changes the paths of light and the rates of clocks.

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Photons follow null geodesics through curved spacetime.

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