Only 55% of Americans know that the sun is a star.
986
A comet's tail always points away from the sun.
2
Astronauts get taller when they are in space.
224
Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
6
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221
Earth is the only planet in our solar system that's not named after a god or goddess.
17
The population of the Earth has more than doubled since 1950.
151
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121