Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
The earth rotates more slowly on its axis in March than in September.
145
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
It 'snows' metal on Venus.
13
Lightning strikes about 6,000 times per minute on this planet!
158
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
Astronauts cannot burp in space.
232