If two pieces of metal touch in space, they become permanently stuck together.
808
It takes eight and a half minutes for light to get from the sun to earth.
159
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14
The population of the Earth has more than doubled since 1950.
151
A car traveling 100 mph would take more than 29 million years to reach the nearest star (to our solar system)
88
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
An international team of astronomers has spotted the farthest known gravitational lens and, as Albert Einstein predicted, it is a galaxy that deflects and intensifies the light of a much further object.
9