The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
Saturn's moon, Mimas, not only looks like the Death Star, it also has a Pac Man heat signature.
15
The population of the Earth has more than doubled since 1950.
151
The Earth weighs around 6,600,000,000,000,000,000,000 tons (5,940 billion billion metric tons)!
221
More than 20 million meteoroids enter Earth's atmosphere every day.
139
A comet's tail always points away from the sun.
2
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277