Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
The earth rotates more slowly on its axis in March than in September.
145
Astronauts cannot burp in space.
232
Jupiter is bigger than all the other planets combined.
254
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
The earth travels through space at 660,000 miles per hour.
189