You've likely watched space shuttles launch using massive rockets, but how exactly do the rockets that are the backbone of space exploration work?

Today's rockets are more advanced than the unguided weapons of war that preceded them, but it's still just physics.

Rockets are a major part of American aviation and a common hobby in the form of model rockets, but where did the modern rocket engine start?

You've likely watched space shuttles launch using massive rockets, but how exactly do the rockets that are the backbone of space exploration work?