In the last 7 years, humanity has discovered 43 potentially habitable planets.
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More than 20 million meteoroids enter Earth's atmosphere every day.
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Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
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The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
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One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
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If aliens located 60-65 million light years away from us, looked at earth through a really powerful telescope today, they would see dinosaurs!
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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.
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