There's a mysterious dwarf planet between Mars and Jupiter called 'Ceres' which has never been visited by spacecraft or photographed in detail, however, Earth-bound telescopes reveal a large bright shining spot on the surface of this planet, the origin and nature of which are unknown.
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In the last 7 years, humanity has discovered 43 potentially habitable planets.
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The sun is 330,330 times larger than the earth!
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The earth travels through space at 660,000 miles per hour.
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Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
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Summer on Uranus lasts for 21 years.
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The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
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Mars had an oxygen-rich atmosphere around 4 billion years ago
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