Video: Delta 2/SMAP pre-launch news conference

The launch of a NASA ionospheric research satellite off Florida’s east coast is targeted for Oct. 9 after persistent technical problems with its air-dropped Pegasus rocket stymied two launch opportunities last year.

A replay of the United Launch Alliance Delta 4 rocket launching the Air Force’s Wideband Global SATCOM communications satellite No. 7 from Cape Canaveral, Florida.

More photos show the successful liftoff of the United Launch Alliance Atlas 5 rocket flight carrying the Cygnus commercial cargo spacecraft for Orbital ATK and the International Space Station.