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celestial sphere
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Earth's celestial sphere: Stars, planets, and other heavenly bodies
figure illustrating the apparent motions of the Sun and the Moon on the celestial sphere Celestial coordinates seen by an observer in mid-northern latitudes. His celestial meridian is a great circle passing through his zenith and the poles. His astronomical horizon meets the celestial sphere at infinity. positions of the equinoxes
Quizzes
The orbits of the planets and other elements of the solar system, including asteroids, Kuiper belt, Oort cloud, comet
Space Odyssey
Ursa major constellation illustration art. (Big Dipper) stars, space, night sky)
Stars: Explosions in Space
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
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Colorful winter sunset
What's the Difference Between a Solstice and an Equinox?
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8 Unusual Punishments Inflicted on Women Throughout History
New York NY/ USA- November 23, 2018 Hordes of shoppers throng the Macy's Herald Square flagship store in New York looking for bargains on the day after Thanksgiving, Black Friday.
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Santa Claus flying in his sleigh, christmas, reindeer
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Why Is Thanksgiving in the U.S. Celebrated on a Thursday?
Confucius statue at a Confucian Temple in Shanghai, China. Confucianism religion
What is the Difference Between Daoism and Confucianism?
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Brain Games: 8 Philosophical Puzzles and Paradoxes
Plato (left) and Aristotle, detail from School of Athens, fresco by Raphael, 1508-11; in the Stanza della Segnatura, the Vatican. Plato points to the heavens and the realm of Forms, Aristotle to the earth and the realm of things.
Plato and Aristotle: How Do They Differ?

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Earth's celestial sphere: Stars, planets, and other heavenly bodies
Explanation of the celestial sphere.
Video: Encyclopædia Britannica, Inc.

Images

figure illustrating the apparent motions of the Sun and the Moon on the celestial sphere
Apparent motions of the Sun and the Moon on the celestial sphere (see the...
Encyclopædia Britannica, Inc.
Celestial coordinates seen by an observer in mid-northern latitudes. His celestial...
Encyclopædia Britannica, Inc.
positions of the equinoxes
Celestial spheres showing the positions of the equinoxes.
Encyclopædia Britannica, Inc.
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