In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
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Neil Armstrong, the first man to step foot on the moon, carried with him a piece of cloth and wood from the original 1903 Wright Flyer.
12
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
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Astronomer Percival Lowell believed that he was the first person to observe canals on Venus, but because of a faulty adjustment of the eyepiece on his telescope, he was in fact looking at the blood vessels in his own eye.
4
Jupiter is bigger than all the other planets combined.
254
Mars had an oxygen-rich atmosphere around 4 billion years ago
13