The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
If aliens located 60-65 million light years away from us, looked at earth through a really powerful telescope today, they would see dinosaurs!
18
One pinhead of the sun's energy is enough to kill a person at a distance of 160 kilometers.
277
Jupiter is bigger than all the other planets combined.
254
41% of the moon is not visible from earth at any time.
103
The heart of an astronaut actually gets smaller when in outer space.
216
Some asteroids have other asteroids orbiting them.
131
More than 20 million meteoroids enter Earth's atmosphere every day.
139