In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
There's a mysterious dwarf planet between Mars and Jupiter called 'Ceres' which has never been visited by spacecraft or photographed in detail, however, Earth-bound telescopes reveal a large bright shining spot on the surface of this planet, the origin and nature of which are unknown.
5
Astronauts cannot burp in space.
232
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15