NASA TV coverage of ICON launch. Launch is targeted at 6:30 pm Pacific, during the 90-minute launch window opening at 6:25 pm Pacific. The Ionospheric Connection Explorer (ICON) will study the frontier of space: the dynamic zone high in our atmosphere where Earth weather and space weather meet.  ICON will launch from Cape Canaveral Air Force Station aboard a Northrop Grumman Pegasus XL rocket, carried aloft for launch by a L-1011 jet called the “Stargazer.”