Rupert Spies, Senior Lecturer in Food and Beverage Management at Cornell, gives a hands-on workshop on bread making with the NASA team. Jason Koski/courtesy of Cornell University Photography hide caption

itoggle caption Jason Koski/courtesy of Cornell University Photography

This artist's illustration shows what NuSTAR should look like in orbit after its 30-foot-long mast deployed. JPL-Caltech/NASA hide caption

itoggle caption JPL-Caltech/NASA

SpaceX rocket Falcon 9 at Cape Canaveral in Florida was scheduled to launch Saturday morning, but aborted just before liftoff. Roberto Gonzalez/Getty Images hide caption

itoggle caption Roberto Gonzalez/Getty Images