NASA is narrowing down its search for the best design for homes in outer space. The finalists have been named for the latest phase of the space agency's 3D-Printed Habitat Challenge, where teams compete to design shelters that are suitable for the Moon, Mars and maybe other planetary settlements. For this phase, eleven-teams each created full-scale designs. First place in this phase went to New-York based team SEArch+/Apis Cor for their twisted structure that includes small holes to let in natural light. The next round of the competition is scheduled for next month with the finalists printing 3D-scale models of their designs, in the hope of winning an 800 thousand dollar prize.