Mars had an oxygen-rich atmosphere around 4 billion years ago
13
There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
124
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
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
The sun puts out more power in 1 second than mankind has ever used within human existence.
14
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
There is a mass reservoir of water floating in space that is 100,000 times bigger than our sun and holds 140 trillion times more water than all of our oceans.
11
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