Guy Norris June 19, 2026 Credit: Matt Hartman Northrop Grumman’s Pegasus XL rocket, loaded with a spacecraft intended to boost NASA’s ailing Neil Gehrels Swift Observatory to a higher orbit, reached Mojave, California, on June 18, as its carrier aircraft stopped off en route to the Pacific for a launch that's targeted for later this month... Guy Norris Guy is a Senior Editor for Aviation Week, covering technology and propulsion. He is based in Colorado Springs.