Some asteroids have other asteroids orbiting them.
131
It would take more than 150 years to drive a car to the sun.
569
More than 20 million meteoroids enter Earth's atmosphere every day.
139
Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
Venus is the only planet that rotates clockwise.
310
The Sun and Moon appear to be the same size because the moon is 400 times smaller than the Sun, but 400 times closer to Earth.
13