Summer on Uranus lasts for 21 years.
358
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
There are 5 to 10 times more stars in the known Universe than there are grains of sand on all the world's beaches, but a single grain of sand has more atoms than there are stars in the known Universe.
20
Pluto is smaller than Russia.
9
In outer space there exists a gigantic cloud of alcohol which can be used to produce 400 trillion trillion pints of beer.
31
There are two golf balls sitting on the moon.
721
Approximately 115 tons of ocean salt spray enters the earth's atmosphere each second.
100