Not only are there rogue planets floating through space completely alone, not orbiting any stars, but it’s possible that these pitch-black lonely planets support life.
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The focusing muscles of the eyes move around 100,000 times a day. To give your leg muscles the same workout, you would need to walk 80km (50 miles) every day.
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The 409 escalators in the London subway cover a distance every week which is approximately equivalent to several trips around the globe!
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An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
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The strangers in your dreams are actually people that you've seen in real life.
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The University of Oxford (teaching since 1096) predates the Aztec empire (1428 - 1521).
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