In 2011, archaeologists discovered the skeletal remains of a Roman couple who have been holding hands for 1,500 years.
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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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Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
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In the last 7 years, humanity has discovered 43 potentially habitable planets.
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Mars had an oxygen-rich atmosphere around 4 billion years ago
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Your body is creating and killing about 2.4 million red blood cells per second.
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