The heart of an astronaut actually gets smaller when in outer space.
216
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
Venus is the only planet that rotates clockwise.
310
If you went out into space, you would explode before you suffocated because there's no air pressure.
149
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
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