A comet's tail always points away from the sun.
2
The earth rotates more slowly on its axis in March than in September.
145
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
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
It takes eight and a half minutes for light to get from the sun to earth.
159
Neil Armstrong, the first man to step foot on the moon, carried with him a piece of cloth and wood from the original 1903 Wright Flyer.
12
41% of the moon is not visible from earth at any time.
103