If you went out into space, you would explode before you suffocated because there's no air pressure.
149
Summer on Uranus lasts for 21 years.
358
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
The sun is 330,330 times larger than the earth!
190
There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
124
It takes eight and a half minutes for light to get from the sun to earth.
159
Some asteroids have other asteroids orbiting them.
131