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The Orbital ATK Pegasus XL rocket, with NASA's Ionospheric Connection Explorer (ICON) spacecraft attached, is moved on an assembly integration trailer from one high bay to another Aug. 23, 2017, at Building 1555 at Vandenberg Air Force Base in California. The Pegasus rocket is being prepared for the ICON mission. The explorer will launch on June 15, 2018, from Kwajalein Atoll in the Marshall Islands (June 14 in the continental United States) on the Pegasus XL, which is attached to the company's L-1011 Stargazer aircraft. ICON will study the frontier of space - the dynamic zone high in Earth's …
