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

An upgraded version of SpaceX’s Dragon cargo freighter launched Sunday from the Kennedy Space Center in Florida, loaded with 3.2 tons of supplies and experiments in the first of at least nine resupply flights to the International Space Station under a new NASA contract.

A SpaceX Dragon supply ship packed with nearly three tons of experiments, crew provisions and supplies will remain on the ground until at least Friday morning to allow more time for NASA flight controllers to troubleshoot a problem with an electrical distribution unit on the International Space Station.

Look back on Monday’s blastoff of a SpaceX Falcon 9 rocket from the Kennedy Space Center in this gallery of photos captured by remote cameras at the launch pad, plus views of the first stage returning to Cape Canaveral for a propulsive landing.