NASA CHAPEA crew exits Mars habitat after 378 days in Houston
Four volunteers complete a year-long Mars simulation at Johnson Space Center and step outside for the first time.
KEY POINTS
- Four volunteers spent 378 days in a Mars simulation habitat in Houston.
- The crew exited the 3D-printed Mars Dune Alpha habitat on October 31, 2026.
- The habitat covers about 158 square meters, or 1,700 square feet.
- NASA says the mission provides foundational data for Moon and Mars exploration.
Four volunteer crew members have completed a 378-day Mars simulation inside a 3D-printed habitat at NASA's Johnson Space Center in Houston. The facility, called Mars Dune Alpha, covers about 158 square meters, or 1,700 square feet. Commander Ross Elder, medical officer Ellen Ellis, science officer Matthew Montgomery, and flight engineer James Spicer stepped outside on Saturday, October 31, 2026.
The crew entered the habitat on October 19, 2025, and lived in isolation with limited resources and restricted communications. Messages to Earth took up to 22 minutes each way, mimicking the delay of interplanetary distance. They grew crops, maintained the habitat, and carried out simulated Mars operations.
“For Mars, the risks are great, but through seeking understanding, strong vision and leadership, creativity, fortitude, hard work, and an incredible foundation, the goal of putting humans on Mars is not only achievable, but rather inevitable.”
NASA streamed the moment the crew left the habitat and reunited with their families and friends. The experiment did not reproduce Martian gravity, radiation, or atmosphere, but it recreated daily stressors future colonists would face. Absolute confinement and communication delays were among the biggest mental challenges.
Vanessa Wyche, director of the Johnson Space Center, said the mission will provide foundational data to inform human exploration of the Moon, Mars, and beyond. She noted the crew lived with limited resources inside just 1,700 square feet.
Ross Elder said in his first remarks outside that the risks for Mars are great, but the goal of putting humans on Mars is achievable and inevitable. He cited strong vision, leadership, creativity, fortitude, and hard work as key factors.
The CHAPEA missions are designed to emulate what life would look like for NASA on the surface of the Red Planet. NASA says the Earth-based mission will help prepare for human exploration of the Moon, Mars, and beyond.
Mars has a radius of 2,106 miles, according to NASA, making it about half the size of Earth.
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