Video: Pegasus and CYGNSS pre-launch news conference

A commercial Cygnus freighter made a science-enabling delivery to the International Space Station today, bringing about 7,500 pounds of cargo to the outpost under NASA’s privatized logistics shipment program.

Follow the key events of the Falcon 9 rocket’s ascent to orbit with the second set of 10 next-generation satellites for Iridium’s voice and data relay fleet.

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.