Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
If aliens located 60-65 million light years away from us, looked at earth through a really powerful telescope today, they would see dinosaurs!
18
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
Earth is the only planet in our solar system that's not named after a god or goddess.
17
Summer on Uranus lasts for 21 years.
358
The light hitting the earth right now is 30 thousand years old.
163