Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
The sun is 330,330 times larger than the earth!
190
A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127
A car traveling 100 mph would take more than 29 million years to reach the nearest star (to our solar system)
88
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
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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