The Space Shuttle main engine weighs 1/7th as much as a train engine but delivers as much horsepower as 39 locomotives.
147
Pluto is smaller than Russia.
9
Scientists have confirmed that Enceladus, one of Saturn’s moons, has a watery ocean.
6
Summer on Uranus lasts for 21 years.
358
If you were to cry in space, the tears would form a bubble in your eye until it's so big it moves to another spot on your face.
10