AST-579intermediate

Transit Photometry: Observation, Measurement & Evidence

Transit photometry detects an exoplanet when it crosses the face of its star and blocks a measurable fraction of starlight. Transits measure planetary radii, orbital periods, system geometry, atmospheric spectra, and population statistics.

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intermediate48 minFact checked

Transit Photometry: Observation, Measurement & Evidence

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AST-578Transit Photometry: Physical Mechanisms→

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AST-580Transit Photometry: Advanced Connections→

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Transit photometry detects an exoplanet when it crosses the face of its star and blocks a measurable fraction of starlight.

supported

For a small dark planet crossing a uniformly bright star, the fractional light loss is approximately the square of the radius ratio.

supported

Kepler and TESS have detected thousands of repeating transit signals.