Q&A with John Shannon, Boeing’s SLS vice president and program manager (members only)

SpaceX scrubbed the planned launch of its next set of Starlink satellites Friday. A Falcon 9 rocket is awaiting liftoff from pad 39A at the Kennedy Space Center in Florida with 57 Starlink Internet satellites and two commercial Earth-imaging microsatellites for BlackSky.

SpaceX delivered 56 more Starlink internet satellites into the company’s global internet constellation after liftoff of a Falcon 9 rocket from Cape Canaveral Wednesday, bringing the total number of Starlinks launched to 4,217 spacecraft.

SpaceX’s Falcon 9 rocket closed out a busy 2017 Cape Canaveral launch schedule on Dec. 15 with a successful liftoff on a space station resupply mission. The Falcon 9’s first stage booster, making its second launch, returned to Florida’s Space Coast for an on-target landing.