Some asteroids have their own moons.
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Neptune is the farthest known major planet from the Sun.
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The International Space Station is one of the most complex engineering projects ever built.
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The light you see from some stars today began traveling before humans existed.
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Mercury has extreme temperature differences.
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A day on Mercury lasts longer than a year on Mercury.
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Some stars collapse into black holes at the end of their life cycle.
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Some pulsars emit beams of radiation like cosmic lighthouses.
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Comets orbit the Sun in elongated paths.
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