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.
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A 100-pound person on Earth would weigh 38 pounds on Mars.
102
Lightning strikes about 6,000 times per minute on this planet!
158
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127
More than 20 million meteoroids enter Earth's atmosphere every day.
139
If you went out into space, you would explode before you suffocated because there's no air pressure.
149
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
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