What’s the Best Kind of Rocket Fuel?

Apollo_12_launches_from_Kennedy_Space_Center
The Saturn V starts leaving the Earth. (NASA)

Generally speaking, a rocket is a rocket, and rocket science is really just a matter of controlling and harnessing a fast expansion of gas to turn it into propulsion. But there are different kinds of propulsion for different kinds of rockets, and some have benefits over others depending on where you’re going.  Continue reading “What’s the Best Kind of Rocket Fuel?”