The Artemis Orion capsule is designed to float. After returning from space, the capsule performs a "splashdown"
in the ocean where it remains buoyant until recovery.
Floating and Stability
Buoyancy Systems: The capsule uses a Crew Module Uprighting System (CMUS), which consists of five bright orange airbags that inflate upon hitting the water. These bags ensure the capsule stays upright (Stable 1 position) and prevents it from floating upside down or on its side.
Recovery Configuration: Once floating, the crew module enters a power-down state to preserve energy while waiting for recovery teams.
Stable Platform: For the Artemis II mission, which splashed down in the Pacific Ocean off the coast of San Diego on 10 April 2026, the capsule served as a "front porch" for the astronauts. They were able to exit onto an inflatable raft alongside the floating spacecraft before being hoisted to safety.
Why it Floats
The capsule is engineered for crashworthiness, meaning it must survive a high-speed impact with the water and remain a safe, buoyant environment for the astronauts. While it hits the water at roughly 15–20 mph (assisted by 11 parachutes), its structure is designed to absorb the shock and maintain its integrity on the ocean surface.
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As others have pointed out, this seems to be a very dangerous procedure - the ... [more]