One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
41% of the moon is not visible from earth at any time.
103
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
The sun is 330,330 times larger than the earth!
190
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160