Photos: Atlas 5 rolls out for launch

Making its third try after back-to-back aborts, a Falcon 9 rocket successfully launched the commercial Intelsat 35e communications satellite Wednesday from NASA’s Kennedy Space Center in Florida. Liftoff from launch pad 39A occurred at 7:38 p.m. EDT (2338 GMT).

Carrying more science research gear to the International Space Station than ever launched before by U.S. commercial logistics vehicles, the next Orbital ATK Cygnus freighter takes flight Tuesday.

Russia has blamed a design flaw in the Proton rocket’s third stage that went undetected for decades as the cause of a May 16 launch failure.