Photos: Atlas 5 powers away with NROL-61 payload

NASA’s Ionospheric Connection Explorer satellite was scheduled to launch Wednesday aboard an air-dropped Northrop Grumman Pegasus XL rocket over the Atlantic Ocean, but managers aborted the mission after encountering a technical concern with the rocket following departure from Cape Canaveral Air Force Station. The launcher’s L-1011 carrier jet returned to Florida.

Iran’s second try in less than a month to send a satellite into orbit apparently failed shortly after liftoff from a remote desert launch pad under daily surveillance from a fleet of commercial imaging spacecraft, according to U.S. government officials and independent analysts.

SpaceX’s first launch since August took off from Cape Canaveral at 9:56 a.m. EST (1456 GMT) to carry 60 broadband satellites into orbit for the company’s Starlink network. The Starlink satellites rode together on top of a Falcon 9 rocket with a previously-flown first stage and a reused payload fairing.