Video: Dragon arrives at space station

Construction crews at Cape Canaveral’s Complex 40 launch pad are busily repairing and upgrading the facility after a SpaceX Falcon 9 rocket exploded there last year, with the pad’s return to service scheduled before the end of the summer, clearing the way for final preparations for the triple-core Falcon Heavy’s maiden flight late this year.

The spacecraft was originally slated to launch nearly a week prior, but SpaceX ran into ground systems issues. Liftoff from pad 4E at Vandenberg Space Force Base happened at 6:09 p.m. PST (9:09 p.m. EST / 0209 UTC).

A week after a test-firing of SpaceX’s new crew capsule went awry, SpaceX successfully completed a hold-down firing of its next Falcon 9 launcher Saturday morning at Cape Canaveral in preparation for a predawn liftoff Wednesday carrying several tons of food, supplies and experiments to the International Space Station.