Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
Astronauts cannot burp in space.
232
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
Sound doesn't travel in space.
255
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