NASA’s Johnson Space Center is about to achieve another milestone: completion of the first 45-day-long spaceflight analog of four crew members in a habitat on the ground.  The Flight Analogs Project of NASA’s Human Research Program simulates the confinement and isolation of a ship in space to study the crew members and learn what it will take to support crews on extremely long missions, such as those to Mars and other destinations out into the solar system.  Take a look inside the habitat to see what supports four test subjects on a six-and-a-half-week mission, and hear a volunteer explain why he choose to make this “flight” of discovery.