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A Model of the Cosmos: Quick Facts

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Photos

solar system
Illustration showing the eight planets of the solar system in order from the Sun-Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune-depicted to scale by size, with labeled diameters in miles and kilometers. The Sun is partially visible on the left for comparison.
Earth
imaging using ultraviolet light
Moon
Mercury
Venus
Mars
Jupiter
Saturn
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