An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
9
There are approximately 3,500 astronomers in the U.S. - but over 15,000 astrologers.
124
The earth travels through space at 660,000 miles per hour.
189
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127
Pluto is smaller than Russia.
9
Summer on Uranus lasts for 21 years.
358
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82