In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
If two pieces of metal touch in space, they become permanently stuck together.
808
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
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
Only 55% of Americans know that the sun is a star.
986
A car traveling 100 mph would take more than 29 million years to reach the nearest star (to our solar system)
88
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
There are 5 to 10 times more stars in the known Universe than there are grains of sand on all the world's beaches, but a single grain of sand has more atoms than there are stars in the known Universe.
20