Astronomy

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What is the geocentric model of the solar system?

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The geocentric model is an ancient astronomical theory that posits Earth as the center of the universe, with all celestial bodies, including the Sun and stars, revolving around it.

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What is the heliocentric model of the solar system?

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The heliocentric model is the astronomical theory that places the Sun at the center of the solar system, with Earth and other planets orbiting around it.

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What are the Zodiac constellations?

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The Zodiac constellations are a group of twelve specific constellations that the Sun, Moon, and planets appear to move through in the sky, traditionally used in astrology.

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Which constellation is known as the Big Dipper?

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The Big Dipper is an asterism within the constellation Ursa Major, recognizable by its distinctive shape formed by seven bright stars.

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What are terrestrial planets?

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Terrestrial planets are rocky planets that are primarily composed of silicate rocks or metals. The four terrestrial planets in our solar system are Mercury, Venus, Earth, and Mars.

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What is Betelgeuse?

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Betelgeuse is a red supergiant star located in the constellation Orion, often referred to as 'Orion's armpit' due to its position in the constellation.

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What is a constellation?

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A constellation is a group of stars that forms a recognizable pattern in the night sky, often named after mythological figures, animals, or objects.

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What is the difference between a planet and a star?

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A planet is a celestial body that orbits a star and does not produce its own light, while a star is a massive, luminous sphere of plasma that generates light and heat through nuclear fusion.

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What is the significance of Polaris?

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Polaris, also known as the North Star, is significant for navigation as it is located nearly directly above the North Pole, making it a fixed point in the sky.

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What are gas giants?

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Gas giants are large planets that are primarily composed of hydrogen and helium, with no well-defined solid surface. The four gas giants in our solar system are Jupiter, Saturn, Uranus, and Neptune.