A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
The earth rotates more slowly on its axis in March than in September.
145
On Titan, Saturn's largest moon, the atmosphere is so thick and the gravity so low that humans could fly through it by flapping "wings" attached to their arms.
7
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
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
Buzz Aldrin’s mother’s maiden name was Moon.
9