Not just anyone can live on MarsThe CHAPEA crew celebrates the birthday for Ross Brockwell, left, inside the habitat. Luckily for the CHAPEA crew, everyone got along well and became close even before they set foot in the habitat, Brockwell said, which helped reduce the sense of isolation. Homesickness is realThe 1,700-square-foot CHAPEA habitat contains individual living quarters for four volunteer crew members. But you might fall in love with itA CHAPEA crew member participates in a simulated "Marswalk" inside a 1,200-square-foot sandbox to mimic the Martian landscape. Despite the challenges he faced during the simulation, Brockwell would love to visit Mars for real someday.

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Persons: —, Ross Brockwell, he'd, Brockwell, Patience, it's, Bill Stafford, wasn't, Gene Kranz's, Scott Kelly, James M Organizations: Service, NASA, Business Locations: Houston