One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
It would take more than 150 years to drive a car to the sun.
569
Mars had an oxygen-rich atmosphere around 4 billion years ago
13
Earth is the only planet in our solar system that's not named after a god or goddess.
17