Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
It 'snows' metal on Venus.
13
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
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
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
The sun is 330,330 times larger than the earth!
190
Astronauts get taller when they are in space.
224