Today's top fuel dragsters take off with more force than the space shuttle.
120
Lightning strikes about 6,000 times per minute on this planet!
158
The population of the Earth has more than doubled since 1950.
151
Some asteroids have other asteroids orbiting them.
131
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
The earth rotates more slowly on its axis in March than in September.
145
The earth travels through space at 660,000 miles per hour.
189
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194