If two pieces of metal touch in space, they become permanently stuck together.
807
A 100-pound person on Earth would weigh 38 pounds on Mars.
102
Summer on Uranus lasts for 21 years.
358
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
It would take more than 150 years to drive a car to the sun.
569
Astronauts cannot burp in space.
232
Some asteroids have other asteroids orbiting them.
131
Jupiter's moon Ganymede, is larger than the planet Mercury!
149