An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
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
There's a mysterious dwarf planet between Mars and Jupiter called 'Ceres' which has never been visited by spacecraft or photographed in detail, however, Earth-bound telescopes reveal a large bright shining spot on the surface of this planet, the origin and nature of which are unknown.
5
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
The earth travels through space at 660,000 miles per hour.
189
Pluto is smaller than Russia.
9