The second simulated Mars mission has ended, with four NASA researchers spending over a year in the windowless facility in Houston.

NASA's second Mars simulation has concluded, with four researchers spending 378 days in a windowless facility. They participated in simulated Mars missions and maintained contact with loved ones with delays. The study aims to prepare for future human exploration beyond Earth, gathering insights on crew health and performance. NASA astronaut Jack Hathaway highlighted the significant psychological and physiological challenges faced by the volunteers during their time in isolation.