The International Space Station (ISS) orbits Earth every 90 minutes, so astronauts see about 16 sunrises and sunsets each day.
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Space is completely silent because there is no air to carry sound.
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Sea otters hold hands while they sleep to keep from drifting apart. 🦦
The acid in the human stomach is strong enough to dissolve even rusty metal.
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The axolotl can regenerate not only its limbs but also its heart and parts of its brain. 🦎
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The human body contains about 37 trillion cells.
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The DNA in each human cell, if stretched out, would be about 2 meters long.
Prime numbers are infinite — a fact proven by Euclid around 300 BC.
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The Fibonacci sequence often appears in nature, from flower petals and seashells to the spirals of galaxies.
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