It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
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Scientists are now able to grow 'beating' heart tissue in a lab!
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There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
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The only letter not appearing on the Periodic Table is the letter "J".
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Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
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