A Reno man was among six people who spent eight months in a research habitat designed to replicate as closely as possible conditions on the planet Mars. Ansley Barnard, an engineer from Reno, joined five others in the Hawaii Space Exploration Analog and Simulation . . . referred to as the HI-SEAS mission, near the Mauna Loa (Mu-wah-nah lowa) volcano. They entered the specially designed habitat in January and exited last month. The conditions in the dome were designed to test how humans might react to living in isolated and confined conditions for an extended period of time. The team ate only food that was freeze-dried or that would be stable on a long-duration spaceflight. Water and electricity were extremely limited . . . not just for drinking, but for showering and other uses. They left the habitat once a week to conduct field studies on foot wearing suits similar to those being designed for astronauts on a Mars excursion.