In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
The earth rotates more slowly on its axis in March than in September.
145
Some asteroids have other asteroids orbiting them.
131
The light hitting the earth right now is 30 thousand years old.
163