The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
Buzz Aldrin’s mother’s maiden name was Moon.
9
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
Only 55% of Americans know that the sun is a star.
986
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