Two days after launching from the Baikonur Cosmodrome in Kazakhstan, three new crew members arrived Friday at the International Space Station to begin a six-month stay. Docking of the crew’s Soyuz MS-09 spacecraft to the station’s Rassvet module occurred at 9:01 a.m. EDT (1301 GMT).

SpaceX’s launch of a cluster of communications satellites for Orbcomm, set for as soon as next weekend, holds the headlines, but the company’s Falcon 9 rocket could fly at least four times in the next two months, assuming smooth launch campaigns and no glitches.

A technical issue with the United Launch Alliance Atlas 5 rocket that will send NASA’s $2.4 billion Perseverance rover toward Mars has pushed the mission’s launch date back to no earlier than July 30, nearly two weeks into a month-long window for the rover to head to the Red Planet, or else face a two-year delay.