A chair for Martian gravity

It costs about $783,000 to send a single office chair to Mars. With furniture taking up 20–30% of habitat volume, what a crew sits on is a serious mass-and-volume problem, not an afterthought.

The challenge

Analog habitats today just use standard Earth furniture, which doesn't survive the economics of Mars. And at about a third of Earth's gravity (0.38 g), posture, support, and rest all change — so the real question isn't how to ship a chair, but what a chair should even be on Mars.

Approach

Led by Anastasia Prosina with Robert Salazar and Samuel Binkin at the Sasakawa International Center for Space Architecture (SICSA), the study designed flexible, multipurpose furniture that adapts across independent work, conference, social, and dining modes — on the principle that space architecture defines behavior. Everything was designed around the body's real needs at 0.38 g rather than transplanting an Earth chair to another planet.

What we built

The deployable adjustable workstation is a sandwich of two UHMWPE polymer sheets around a closed-cell foam board — stain-resistant, lightweight, high tensile strength, and no water maintenance. The ultralight collapsible chair uses carbon-fiber telescopic poles, UHMWPE connectors, a polyurethane-foam seat, silicone foot pads, and upholstery combining nylon with antimicrobial Merino wool.

Outcome

The chair weighs 1.5 pounds — 75% lighter than a typical office chair — and four units pack into just two cubic meters. Its 110° trunk-thigh angle keeps muscles engaged, helping counter the bone and muscle loss of low gravity. A design study that treats everyday furniture as a serious space-architecture question.