Live coverage of the countdown and launch of a Proton rocket with the Intelsat 31/DLA-2 communications satellite. Text updates will appear automatically below; there is no need to reload the page. Follow us on Twitter.
Live video from ILS begins at 0645 GMT (2:45 a.m. EDT).
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The 15th resupply mission to the International Space Station by a Cygnus cargo freighter lifted off at 12:36 p.m. EST (1736 GMT) Saturday aboard an Antares rocket from Wallops Island, Virginia. The Northrop Grumman-owned spacecraft is carrying more than 8,000 pounds of experiments and provisions for the space station and its seven-person crew. Capture by the station’s robotic arm occurred at 4:38 a.m. EST (0938 GMT) Monday.