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
The earth travels through space at 660,000 miles per hour.
189
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127
The earth is .02 degrees hotter during a full moon.
157