More than 20 million meteoroids enter Earth's atmosphere every day.
139
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
An international team of astronomers has spotted the farthest known gravitational lens and, as Albert Einstein predicted, it is a galaxy that deflects and intensifies the light of a much further object.
9
There is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
Some asteroids have other asteroids orbiting them.
131
Only 55% of Americans know that the sun is a star.
986
The earth travels through space at 660,000 miles per hour.
189