The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
10
The population of the Earth has more than doubled since 1950.
151
The earth rotates more slowly on its axis in March than in September.
145
Neil Armstrong, the first man to step foot on the moon, carried with him a piece of cloth and wood from the original 1903 Wright Flyer.
12
Some asteroids have other asteroids orbiting them.
131
The earth travels through space at 660,000 miles per hour.
189
Sound doesn't travel in space.
255
A 100-pound person on Earth would weigh 38 pounds on Mars.
102