It takes eight and a half minutes for light to get from the sun to earth.
159
Summer on Uranus lasts for 21 years.
358
The typical spec of dust that you see floating in the air is half way in size between the Earth and a subatomic particle.
131
Sound doesn't travel in space.
255
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
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82