Apollo’s command module was a tight, highly packed spacecraft built for short lunar missions, while modern designs have shifted toward space, endurance, and crew comfort. Apollo Command Module carried three astronauts during missions like Apollo 17 in 1972, with about 210 cubic feet of habitable space inside a cone shaped capsule roughly 12 feet high and 12 feet 10 inches wide. Everything inside was dense and manual, filled with switches, dials, and circuit breakers, reflecting the technology of the time. In contrast, Orion spacecraft is wider at about 16.5 feet in diameter and offers around 330 cubic feet of space, giving astronauts noticeably more room to move and work. That increase allows Orion to carry four crew instead of three, marking a clear shift in design priorities.
The difference goes beyond size into capability and mission scope. Apollo was designed for about 14 days of operation, focused strictly on lunar missions, while Orion is built for up to 21 days and for broader deep space exploration. Modern systems replace Apollo’s analog cockpit with digital displays, redundant computers, and hundreds of sensors, along with better materials and improved heat shield technology. Crew support has also advanced, with features like exercise equipment and a proper waste system that Apollo lacked. By April 2026, Orion proved its role during Artemis II, carrying four astronauts on a lunar flyby, showing how spacecraft design has evolved from a compact survival capsule into a more capable and flexible deep space vehicle.