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eclipse
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Solar eclipse April 8, 2024 total solar eclipse
Solar and lunar eclipses, explained
How do solar and lunar eclipses occur?
geometry of a lunar eclipse lunar eclipse solar eclipse
Learn why there is not a solar eclipse every month
Five facts about solar eclipses
illustration depicting the successive phases of a solar eclipse Baily's beads
What happens during a solar eclipse?
geometry of a total solar eclipse
Watch: A total solar eclipse
annular eclipse comparison of the size of the sun at sunset, Joshua Tree National Monument (left), with the moonrise over Grand Canyon National Park, Arizona (right).
Time-lapse: A total lunar eclipse
eclipse, occultation, and transit of a Galilean moon of Jupiter
How to watch a solar eclipse
What is the path of the 2024 total solar eclipse?
figure illustrating the apparent motions of the Sun and the Moon on the celestial sphere graph depicting the ascending node of the Moon's orbit as seen from an observer on Earth
NASA's Parker Solar Probe spacecraft
Observe the 2012 transit of Venus across the sun captured as seen by the Solar Dynamics Observatory
transit of Mercury across the face of the Sun Venus orbiting the Sun Venus crossing the face of the Sun illustration depicting the light curve of Algol solar eclipse; De la Rue, Warren Solar eclipse, Java, June 11, 1983, showing the diamond ring effect. This effect occurs when only the barest sliver of the Sun is visible around the Moon during a total solar eclipse. Io, in Jupiter's shadow, photographed by the Galileo spacecraft on May 6, 1997. The relative brightnesses of Io's features are enhanced with added colour, red being the most intense, yellow-green moderate, and blue the faintest. Small red and yellow-green spots are probably lava flows or lakes, while the bright area extending from Io's left limb corresponds to the plume from the volcano Prometheus. The diffuse glow on the right limb also has plumelike characteristics. lunar eclipse Total solar eclipse. The delicately structured glow of the solar corona—or solar atmosphere—seen during the March 7, 1970, total eclipse of the Sun. The corona is visible to the unaided eye only during an eclipse. experimental evidence for general relativity The orbit of Charon around Pluto as viewed from Earth, 1982–93. Between 1985 and 1990, Pluto and Charon were in a period of mutual eclipses. During each 6.4-day revolution around Pluto, Charon passed in front of Pluto, partially blocking it from view, and then disappeared behind Pluto. These mutual events occur when Charon's orbital plane around Pluto intersects Earth, which happens only twice in Pluto's 248-year trip around the Sun. An animated image of a total lunar eclipse Eclipses of the Sun and Moon. A solar eclipse occurs when the Moon passes between Earth and the Sun. Observers in the Moon's penumbral shadow see a partial blocking of the Sun; those in the umbra see the Sun completely covered by the Moon. A lunar eclipse occurs when the Moon passes into Earth's shadow. In the penumbra, the Moon may appear slightly dimmed; when it enters the umbra, the entire Moon becomes quite dark and may take on a reddish tinge.
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eclipse summary
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Nicolaus Copernicus. Nicolas Copernicus (1473-1543) Polish astronomer. In 1543 he published, forward proof of a Heliocentric (sun centered) universe. Coloured stipple engraving published London 1802. De revolutionibus orbium coelestium libri vi.
All About Astronomy

eclipse: Related Content

News •

Fred Espenak, Astrophysicist Known as Mr. Eclipse, Dies at 73 • June 25, 2025, 9:17 AM ET (New York Times)
Fred Espenak, astronomy's 'Mr. Eclipse', dies at 71 • June 4, 2025, 6:12 AM ET (Space)

Photos and Videos

Solar eclipse
April 8, 2024 total solar eclipse
geometry of a lunar eclipse
lunar eclipse
solar eclipse
illustration depicting the successive phases of a solar eclipse
Baily's beads
geometry of a total solar eclipse
annular eclipse
comparison of the size of the sun at sunset, Joshua Tree National Monument (left), with the moonrise over Grand Canyon National Park, Arizona (right).
Solar and lunar eclipses, explained
How do solar and lunar eclipses occur?
Learn why there is not a solar eclipse every month
Five facts about solar eclipses
What happens during a solar eclipse?
See All Videos and Images →

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Key People

al-Kāshī
Persian astronomer and mathematician
Anaxagoras
Anaxagoras
Greek philosopher
Georg von Peuerbach
Austrian mathematician

Related Quizzes

Nicolaus Copernicus. Nicolas Copernicus (1473-1543) Polish astronomer. In 1543 he published, forward proof of a Heliocentric (sun centered) universe. Coloured stipple engraving published London 1802. De revolutionibus orbium coelestium libri vi.
All About Astronomy
Nicolaus Copernicus. Nicolas Copernicus (1473-1543) Polish astronomer. In 1543 he published, forward proof of a Heliocentric (sun centered) universe. Coloured stipple engraving published London 1802. De revolutionibus orbium coelestium libri vi.
All About Astronomy