equinox

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What causes the seasons?

positions of the equinoxes

sunlight strikes parts of Earth differently

Seasonal configuration of Earth and Sun

What is the summer solstice?

equinox: Related Content

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Photos and Videos

positions of the equinoxes

sunlight strikes parts of Earth differently

Seasonal configuration of Earth and Sun

What causes the seasons?

What is the summer solstice?

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Topics

precession of the equinoxes What’s the Difference Between a Solstice and an Equinox?vernal equinox autumnal equinox First Day of Fall season celestial sphere Sun solstice ecliptic midnight Sun solar energy How Hot Is the Sun?The Sun Was Eaten: 6 Ways Cultures Have Explained Eclipses solar eclipse 6 Questions About the Sun Answered heliosphere photosphere

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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.

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