An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
Sound doesn't travel in space.
255
Summer on Uranus lasts for 21 years.
358
If two pieces of metal touch in space, they become permanently stuck together.
808
If you went out into space, you would explode before you suffocated because there's no air pressure.
149
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
Jupiter's moon Ganymede, is larger than the planet Mercury!
149