There are 5 to 10 times more stars in the known Universe than there are grains of sand on all the world's beaches, but a single grain of sand has more atoms than there are stars in the known Universe.
20
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
Buzz Aldrin’s mother’s maiden name was Moon.
9
More than 20 million meteoroids enter Earth's atmosphere every day.
139
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
The earth rotates more slowly on its axis in March than in September.
145
If you went out into space, you would explode before you suffocated because there's no air pressure.
149
Pluto is smaller than Russia.
9