One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
A comet's tail always points away from the sun.
2
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
If NASA sent birds into space they would soon die; they need gravity to swallow.
146
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
6