It takes all kinds of spacecraft to reach orbit and a NASA contractor is working to build three more. Houston, Texas-based Spacehab, known for its laboratory modules and other hardware that ride aboard NASA’s space shuttles, is developing a trio of ever-larger vehicles to make up its Apex spacecraft family. “Apex is our opportunity to have a full, end-to-end commercial [space] service,” said Michael Bain, the firm’s chief operating officer, in an interview. Spacehab engineers are currently hammering out specifications for their Apex 100, 300 and 400 series spacecraft, which they hope will provide a flexible range of services for...