In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
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If you were to cry in space, the tears would form a bubble in your eye until it's so big it moves to another spot on your face.
10
A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
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Only 55% of Americans know that the sun is a star.
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