Engineers will use a backscatter device to examine space shuttle Discovery's external fuel tank on Launch Pad 39A at NASA's… https://www.rawpixel.com/image/441036/free-photo-image-engine-space-shuttle-discoveryFree Image from public domain licenseOn Launch Pad 39A at NASA's Kennedy Space Center in Florida, a new 7-inch quick disconnect is installed on the ground… https://www.rawpixel.com/image/441034/free-photo-image-astronaut-blast-off-cape-canaveralFree Image from public domain license