CAPE CANAVERAL, Fla. — Forget blowup air mattresses. Space station astronauts are getting their first inflatable room. It’s a technology demo meant to pave the way for moon bases and Mars expeditions, as well as orbiting outposts catering to scientists and tourists in just a few more years. Bigelow Aerospace is behind the experiment, which got a ride to the International Space Station with another private space company. An unmanned SpaceX Falcon rocket launched late Friday afternoon, carrying a capsule full of supplies with the pioneering pod in its trunk.