It takes eight and a half minutes for light to get from the sun to earth.
159
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127
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
There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
124
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118