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thumb|Totality during the solar eclipse of August 11, 1999, showing the [[solar corona and prominences]] thumb|The lunar umbra on Earth during the solar eclipse of August 21, 2017, as seen from space

AI overview

An eclipse occurs when one celestial body blocks the light from another, such as when the Moon passes in front of the Sun or Earth's shadow falls on the Moon. Eclipses have fascinated people throughout history and provide scientists with valuable opportunities to study celestial phenomena like the Sun's corona and the interactions between Earth, Moon, and Sun.

AI-generated from the Wikipedia summary — may contain errors.