Pluto is smaller than Russia.
9
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
The earth travels through space at 660,000 miles per hour.
189
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16