Earth is the only planet in our solar system that's not named after a god or goddess.
17
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13
Summer on Uranus lasts for 21 years.
358
Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
6
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
Astronauts cannot burp in space.
232
The sun is 330,330 times larger than the earth!
190