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
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
Venus is the only planet that rotates clockwise.
310
In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
Sound doesn't travel in space.
255
Buzz Aldrin’s mother’s maiden name was Moon.
9
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9