Stress on Simulated Mars Was Not What I Expected

or 6 crewmembers who have supposedly traveled 150 million miles—and were, beforehand, complete strangers—we have remarkably little space. For more than 100 days we’ve been conducting NASA-sponsored studies at HI-SEAS—Hawai’i Space Exploration Analog and Simulation—8,000 feet above sea level, in a dome around the size of a 3-bedroom apartment without real-time communication, to help understand how humans can survive a journey to Mars and