A comet's tail always points away from the sun.
2
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 is a mysterious and loud radio signal known as 'the space roar' that has yet to be explained.
15
There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
124
Tidal forces between the Earth and Moon are slowing the Earth down and pushing the Moon further away.
46
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
The earth travels through space at 660,000 miles per hour.
189
Pluto is smaller than Russia.
9