If two pieces of metal touch in space, they become permanently stuck together.
808
If NASA sent birds into space they would soon die; they need gravity to swallow.
146
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
Summer on Uranus lasts for 21 years.
358
Astronomer Percival Lowell believed that he was the first person to observe canals on Venus, but because of a faulty adjustment of the eyepiece on his telescope, he was in fact looking at the blood vessels in his own eye.
4
MDIF, a New York based non-profit organisation, is planning to beam free Wi-Fi to the entire world from space.
18