Video: Liftoff of Atlas 5 rocket with Mexico’s Morelos 3

SpaceX, the upstart rocket company that has shaken up the launch industry with low-cost reusable boosters and ambitious long-range plans to carry people to Mars and beyond, plans to reduce its workforce by about 10 percent, company sources said late Friday.

SpaceX aims to resume launching satellites for its Starlink internet network with the liftoff of a Falcon 9 rocket Wednesday night at Cape Canaveral, and company founder Elon Musk says SpaceX will use the sizeable backlog of Starlink missions to keep pushing the envelope and find the Falcon booster’s reuse life limit.

United Launch Alliance teams loaded super-cold liquid hydrogen and liquid oxygen into an Atlas 5 rocket Friday at Cape Canaveral during a countdown dress rehearsal for a planned launch next month with the Solar Orbiter mission, a robotic spacecraft to study the origins of the solar wind and image the sun’s poles for the first time.