The Bigelow Expandable Activity Module (BEAM) flew to the International Space Station packed up in the trunk of a Dragon capsule and was installed on the station in April. On Thursday NASA attempted to inflate it to its full size, but things didn't quite go as planned. The structure didn't grow as large as NASA expected, and it grew more in diameter than in length, which didn't fit expectations. Meanwhile, pressure was building up. To be on the safe side, NASA halted the expansion, to re-evaluate.