Lightning strikes about 6,000 times per minute on this planet!
158
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Pluto is smaller than Russia.
9
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
The heart of an astronaut actually gets smaller when in outer space.
216