Modern spaceflight rests on a deceptively simple idea: a machine that carries its own fuel and oxidizer, then hurls exhaust ...

An important part of data collection for the United States space program, the North American X-15 had astonishing performance ...

Elon Musk promised to build a spaceship that would put people and cargo into Earth orbit at one-hundredth of the current cost ...

Human crews headed for Mars are still looking at journeys that last most of a year, long enough for radiation, boredom and ...

From bicycles to rockets, learning through experience – whether human or machine – is shaping the future of space exploration ...