Live coverage: SpaceX launches another batch of Starlink satellites

In the first official weather outlook the planned launch this week of NASA’s Mars 2020 Perseverance rover, meteorologists predict an 80 percent chance of favorable conditions to allow liftoff of an Atlas 5 rocket from Cape Canaveral Thursday.

Poised to loft a Russian-German X-ray astronomy observatory into space Friday, a Proton rocket returned to its launch pad Tuesday at the Baikonur Cosmodrome in Kazakhstan after a three-week delay to replace a drained battery on the vehicle.

Rocket Lab counted down to the second test flight of its commercial Electron satellite launcher Monday, U.S. time, but a dramatic computer-commanded abort triggered moments after its engines ignited kept the light-class booster on its New Zealand launch pad for at least two more days.