Live coverage: Dragon supply ship back on Earth

Follow the key events of the Falcon 9 rocket’s ascent to orbit with the another set of 10 next-generation satellites for Iridium’s voice and data relay fleet.

SpaceX completed Friday the last drop test of the Dragon crew capsule’s parachutes before the first launch of astronauts on the human-rated ship May 27, while technicians at Cape Canaveral have mated the spacecraft’s crew module with its unpressurized trunk section.

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.