Q&A with Mark Sirangelo, leader of Sierra Nevada Space Systems

A Russian Progress cargo spacecraft laden with 5,300 pounds of fuel and supplies blasted off from the Baikonur Cosmodrome in Kazakhstan on Saturday, riding a Soyuz rocket smoothly into orbit on the first of two resupply launches heading for the International Space Station in the next two days.

Flying through the sky at supersonic speed, a Falcon 9 rocket stage descended to a historic landing at Cape Canaveral on Monday, returning to the spaceport minutes after boosting 11 Orbcomm communications satellites toward orbit on SpaceX’s first mission since a major failure in June.

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.