Northrop Grumman's L-1011 is on the tarmac after touching down at the Skid Strip at Cape Canaveral Air Force Station in Florida, on Oct. 19, 2018. The company's Pegasus XL rocket, containing NASA's Ionospheric Connection Explorer (ICON), is in view attached beneath the aircraft. The Pegasus XL rocket will launch from the Skid Strip. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology and communications systems.