In space, astronauts cannot cry properly, because there is no gravity, so the tears can't flow down their faces!
175
Only 55% of Americans know that the sun is a star.
986
Lightning strikes about 6,000 times per minute on this planet!
158
If you were to cry in space, the tears would form a bubble in your eye until it's so big it moves to another spot on your face.
10
The population of the Earth has more than doubled since 1950.
151
There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
124
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
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100