Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
Pluto is smaller than Russia.
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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.
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Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
The sun is 330,330 times larger than the earth!
190
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