SpaceX has delivered an inflatable bedroom for astronauts to the International Space Station. The soft compartment is the first of its kind to go into space. But it could be far from the last: its makers hope that it will allow for inflatable habits on Mars, revolutionising the way that astronauts live on space. The company that made the small room, Bigelow Aerospace, hopes that within four years it can launch inflatable space stations made with the same technology that can then be leased out to commercial companies. The Bigelow Expandable Activity Module -- BEAM for short -- is able to be packed into much smaller spaces than traditional habitats.