Live coverage of the countdown and launch of a Proton rocket with the Eutelsat 9B communications satellite. Text updates will appear automatically below; there is no need to reload the page. Follow us on Twitter.
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Live coverage: Proton rocket launches with two U.S.-built satellites
A Russian Proton rocket lifted off at 1017 GMT (6:17 a.m. EDT) Wednesday from the Baikonur Cosmodorme in Kazakhstan. After a marathon 16-hour-long launch sequence, the Proton and its Breeze M upper stage will deploy the Eutelsat 5 West B video broadcast satellite and a robotic satellite servicing payload aiming to attempt the first-ever docking in geosynchronous orbit.