Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13
Buzz Aldrin’s mother’s maiden name was Moon.
9
Venus is the only planet that rotates clockwise.
310
The earth rotates more slowly on its axis in March than in September.
145
The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277

