There are two golf balls sitting on the moon.
721
Today's top fuel dragsters take off with more force than the space shuttle.
120
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
Some asteroids have other asteroids orbiting them.
131
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
More than 20 million meteoroids enter Earth's atmosphere every day.
139
Venus is the only planet that rotates clockwise.
310