More than 20 million meteoroids enter Earth's atmosphere every day.
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65 million years ago the impact of an asteroid is estimated to have had the power of 10 million H-Bombs.
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The heart of an astronaut actually gets smaller when in outer space.
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If you went out into space, you would explode before you suffocated because there's no air pressure.
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In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
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A car traveling 100 mph would take more than 29 million years to reach the nearest star.
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Astronauts cannot burp in space.
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The Hubble telescope is so powerful that it is like pointing a beam of light at a dime that is two miles away.
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A 100-pound person on Earth would weigh 38 pounds on Mars.
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Coca-Cola was the first soft drink to be consumed in outer space.
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Jupiter's moon Ganymede, is larger than the planet Mercury!
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The earth travels through space at 660,000 miles per hour.
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Some asteroids have other asteroids orbiting them.
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Astronauts get taller when they are in space.
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