All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
Astronauts cannot burp in space.
232
The earth travels through space at 660,000 miles per hour.
189
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
Lightning strikes about 6,000 times per minute on this planet!
158
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118
The heart of an astronaut actually gets smaller when in outer space.
216