Mars had an oxygen-rich atmosphere around 4 billion years ago
13
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
6
The typical spec of dust that you see floating in the air is half way in size between the Earth and a subatomic particle.
131
Buzz Aldrin’s mother’s maiden name was Moon.
9
Sound doesn't travel in space.
255
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
A car traveling 100 mph would take more than 29 million years to reach the nearest star (to our solar system)
88