An International Launch Services Proton rocket, in the first flight of its latest and potentially final series of upgrades, on June 10 placed the Intelsat 31 commercial telecommunications satellite into geostationary transfer orbit.
An International Launch Services Proton rocket, in the first flight of its latest and potentially final series of upgrades, on June 10 placed the Intelsat 31 commercial telecommunications satellite into geostationary transfer orbit.