This is one of the most exciting and practical ideas in modern spaceflight. We shall break it down into two[...] ...

Have you ever wondered how rockets work? Rockets may look futuristic, but the basic idea behind them is surprisingly simple. A rocket is a carefully controlled explosion. Fuel and an oxidizer burn ...

Throughout the history of rocketry and spaceflight, rocket engines have always used two distinct fuel types, and each has its own advantages and disadvantages. Liquid-fueled rockets store fuel and ...

It's been a century since a two-second rocket flight in Massachusetts kicked off the liquid-rocket-fuel revolution. Robert H. Goddard (1882-1945), who directed the flight, is widely considered to be ...