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
The light hitting the earth right now is 30 thousand years old.
163
The density of Saturn is so low that if you were to put it in a giant glass of water it would float.
219
The population of the Earth has more than doubled since 1950.
151
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
There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
124
The earth rotates more slowly on its axis in March than in September.
145
In the last 7 years, humanity has discovered 43 potentially habitable planets.
14