In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
The sun is 330,330 times larger than the earth!
190
If two pieces of metal touch in space, they become permanently stuck together.
808
A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127
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
The heart of an astronaut actually gets smaller when in outer space.
216
There are two golf balls sitting on the moon.
721