41% of the moon is not visible from earth at any time.
103
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
Summer on Uranus lasts for 21 years.
358
Lightning strikes about 6,000 times per minute on this planet!
158
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100
The moon is actually moving away from Earth at a rate of 1.5 inches per year.
236
Jupiter's moon Ganymede, is larger than the planet Mercury!
149
If two pieces of metal touch in space, they become permanently stuck together.
808