Is This the Spaceship That Will Take Us to Mars? Gizmodo

Somewhere deep at NASA’s Marshall Space Center, in an unmarked beige hangar, there is a spaceship. A spaceship built with spare parts, scrap hardware from the International Space Stations, a left-over aluminum-lithium cylinder and even museum mockups. One day, it may become the vessel that takes humans to Mars.
NASA engineers lead by Paul Bookout are talking about it at the the Fifth Wernher von Braun Memorial Symposium, happening now in Huntsville, Alabama. Bookout’s team is working with a team from the Johnson Space Center in Houston led by astronaut Benjamin Alvin Drew, a USAF Colonel who’s been to space twice, including on the last mission of the Space Shuttle Discovery.
According to Bookout, the team is using its spaceship habitat to look at volume studies: “Are the crew quarters going to be the right size, the waste and hygiene compartment, the wardroom, the exercise area—we’re looking at all those for this extended stay.”