The population of the Earth has more than doubled since 1950.
151
The heart of an astronaut actually gets smaller when in outer space.
216
If you went out into space, you would explode before you suffocated because there's no air pressure.
149
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
It takes eight and a half minutes for light to get from the sun to earth.
159
Buzz Aldrin’s mother’s maiden name was Moon.
9
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160