ILS Proton Lifts off with EchoStar-21 for Long-Awaited Return to Flight
Spoiler
Russia's Proton-M rocket soared into the skies over the remote Baikonur Cosmodrome again on Thursday, ending a year-long grounding with the launch of the EchoStar-21 mobile communications satellites - one of the vehicle's heaviest Geotransfer payloads to date.
