Video: Space station’s robot arm captures Dragon cargo ship

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.

As expected, NASA announced Wednesday that the first unpiloted test flight of a SpaceX Falcon 9 rocket and a Crew Dragon astronaut ferry ship has slipped from later this month to March 2. The first unpiloted flight of Boeing’s Starliner capsule is now targeted for the April timeframe.

The mission, dubbed Tranche 1 Transporter Layer C, will add another 21 satellites into the burgeoning constellation for the Space Development Agency. Liftoff from pad 4E at Vandenberg Space Force Base happened Wednesday, Oct. 15, at 4:06 p.m. PDT (7:06 p.m. EDT / 2306 UTC).