Falcon Heavy launch of largest commercial communications satellite scrubbed

SpaceX rolled a Falcon Heavy to the launch pad early Wednesday morning ahead of its planned liftoff tonight at 11:04 p.m. EDT (0304 UTC) with the Jupiter 3/EchoStar 24 satellite, the heaviest commercial communications satellite ever launched. The giant rocket, consisting of three Falcon boosters strapped together with a single upper stage, emerged from its hangar, lying atop the Transporter Erector, at around 1 a.m. EDT (0500 UTC). It was hauled up the ramp to the pad along rails by airport-style tugs and a system of pulleys and cables. It was rotated upright just before 11 a.m. EDT (1500 UTC). It will be the seventh mission for the Falcon Heavy and the third this year. More

(Source: SpaceFlight Now - Jul 27)