Mars had an oxygen-rich atmosphere around 4 billion years ago
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There is a mass reservoir of water floating in space that is 100,000 times bigger than our sun and holds 140 trillion times more water than all of our oceans.
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Your body is creating and killing about 2.4 million red blood cells per second.
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The oldest glowing lightbulb was first switched on in 1901 and lives in fire stations in Livermore, CA. It is known as the Centennial Light.
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Your thumb is about the same size as your nose.
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In the last 7 years, humanity has discovered 43 potentially habitable planets.
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There are so many kinds of apples that if you ate a new one everyday, it would take over 20 years to try them all.
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