Pluto is smaller than Russia.
9
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
Summer on Uranus lasts for 21 years.
358
Astronomer Percival Lowell believed that he was the first person to observe canals on Venus, but because of a faulty adjustment of the eyepiece on his telescope, he was in fact looking at the blood vessels in his own eye.
4
Only 55% of Americans know that the sun is a star.
986
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
Sound doesn't travel in space.
255
A lightning bolt generates temperatures five times hotter than those found at the sun's surface!
127