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

A composite of Lyrids over Huntsville, Ala., in 2009. This year, the meteor shower will hit its peak before dawn Sunday morning. Danielle Moser/MSFC/NASA hide caption

itoggle caption Danielle Moser/MSFC/NASA

Discovery is sitting atop NASA's 747 Shuttle Carrier Aircraft, which will fly the shuttle from Florida to Virginia. Roberto Gonzalez/Getty Images hide caption

itoggle caption Roberto Gonzalez/Getty Images

The Warp in this Spiral Galaxy was probably the result of a cosmic collision with another galaxy. Hubble Heritage Team (STScI/AURA), C. Conselice (U. Wisconsin/STScI) et al., NASA hide caption

itoggle caption Hubble Heritage Team (STScI/AURA), C. Conselice (U. Wisconsin/STScI) et al., NASA