Saturn's rings are about 500,000 miles in circumference but only about a foot thick.
160
The temperature of the earth's interior increases by 1 degree every 60 feet down.
115
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
Jupiter has radio storms so strong that they can be picked up and heard by an AM radio.
16
It would take more than 150 years to drive a car to the sun.
569
All of the Earth's continents are wider at the north than in the south - and nobody knows why.
194