On Titan, Saturn's largest moon, the atmosphere is so thick and the gravity so low that humans could fly through it by flapping "wings" attached to their arms.
7
A comet's tail always points away from the sun.
2
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
The earth travels through space at 660,000 miles per hour.
189
Earth is the only planet in our solar system that's not named after a god or goddess.
17
Astronauts cannot burp in space.
232
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
There are 5 to 10 times more stars in the known Universe than there are grains of sand on all the world's beaches, but a single grain of sand has more atoms than there are stars in the known Universe.
20