A SpaceX-owned commercial cargo craft splashed down in the Pacific Ocean west of Baja California late Sunday, closing out a 39-day mission that delivered 2.8 tons of supplies, experiments and holiday treats to the International Space Station, and returned home with research specimens and no-longer-needed hardware.

The Falcon 9 booster assigned to launch two NASA astronauts on an orbital test flight of SpaceX’s Crew Dragon capsule has been test-fired in Texas, but the schedule for the long-awaited mission remains unclear.

One of SpaceX’s most loyal commercial customers, the European-based telecom satellite operator SES, remains committed to flying a spacecraft aboard a “refurbished” Falcon 9 booster as soon as the company resumes rocket flights, officials said.