Crewed Capsules
Every spacecraft that carried humans to orbit and back. Mercury to Crew Dragon.
7 vehicles
Every crewed spacecraft is a life support system shaped like a vehicle. The capsule must protect its crew from vacuum, radiation, micrometeorites, and thermal extremes ranging from -250F in shadow to +250F in sunlight. It must provide breathable air, drinkable water, and a way home. These are the vehicles that have carried humans to space and brought them back alive.
The First Generation
Vostok carried Yuri Gagarin on the first human spaceflight in April 1961. Mercury carried John Glenn to orbit ten months later. Both were barely more than pressurized metal spheres with heat shields -- astronauts and cosmonauts had little control over their vehicles. Gemini and Voskhod added maneuverability, rendezvous capability, and spacewalks. These capsules proved that humans could survive in space. The question became: what could they do there?
To the Moon and Beyond
The Apollo Command Module remains the only crewed spacecraft to have traveled beyond low Earth orbit. Its ablative heat shield withstood re-entry speeds of 25,000 mph -- returning from the Moon is far more violent than returning from orbit. The Soyuz capsule, first flown in 1967, has carried more humans to space than any other vehicle. Its basic design has been refined but never fundamentally changed in nearly six decades of service.
The Commercial Era
SpaceX's Crew Dragon ended America's dependence on Russian vehicles for crew transport to the ISS in 2020. Boeing's Starliner followed. China's Shenzhou has carried every Chinese astronaut to orbit. These modern capsules incorporate touchscreen interfaces, autonomous docking, and reusable components that would have been science fiction to Mercury-era engineers. The capsule concept -- a blunt body with a heat shield -- has outlasted every alternative, including the Space Shuttle.
The capsule is the oldest and most enduring spacecraft design. Ballistic re-entry behind a blunt heat shield is thermodynamically elegant and mechanically simple. The Space Shuttle tried to replace it with a winged orbiter; the Shuttle retired, and capsules remain. Every crewed vehicle currently flying or in development -- Dragon, Starliner, Orion, Shenzhou -- is a capsule. The shape that carried Gagarin to orbit still carries crews today.