Neptune is the farthest known major planet from the Sun.
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The observable universe is about 93 billion light‑years wide.
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The Rosetta mission successfully landed a probe on a comet in 2014.
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The Earth completes one full rotation approximately every 24 hours.
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The Voyager Golden Record was sent into space containing sounds and images from Earth.
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The Earth's atmosphere is layered into troposphere, stratosphere, and beyond.
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