In this image from February 2012, technicians review their checklists after joining NASA's NuSTAR spacecraft with the Orbital Sciences Pegasus XL rocket inside an environmental enclosure at Vandenberg Air Force Base's processing facility in California.
In this image from February 2012, technicians review their checklists after joining NASA’s NuSTAR spacecraft with the Orbital Sciences Pegasus XL rocket inside an environmental enclosure at Vandenberg Air Force Base’s processing facility in California.Image credit: NASA/Randy Beaudoin