Any space vehicle must move at a rate of 7 miles per second in order to escape the earth's gravitational pull.
121
Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
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
In outer space there exists a gigantic cloud of alcohol which can be used to produce 400 trillion trillion pints of beer.
31
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194
The earth rotates more slowly on its axis in March than in September.
145
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115