If two pieces of metal touch in space, they become permanently stuck together.
808
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
Summer on Uranus lasts for 21 years.
358
Venus is the only planet that rotates clockwise.
310
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
The heart of an astronaut actually gets smaller when in outer space.
216
If you went out into space, you would explode before you suffocated because there's no air pressure.
149