Live coverage: Proton blasts off on return-to-flight mission

SpaceX and SES, owner of a 5.8-ton commercial telecom satellite poised for launch from Cape Canaveral on Wednesday, struck a deal to tweak the Falcon 9 rocket’s launch profile to give the SES 9 spacecraft a stronger push toward its operating post more than 22,000 miles above Earth.

NASA’s New Horizons spacecraft made a historic New Year’s encounter with an object nicknamed Ultima Thule in the Kuiper Belt a billion miles beyond Pluto. The NASA space probe passed Ultima Thule at a distance of around 2,200 miles (3,500 kilometers) at 12:33 a.m. EST (0533 GMT) on Jan. 1, making it the most distant planetary body ever explored up close.

For the third time in three weeks, SpaceX is preparing to launch a batch of satellites for the company’s Starlink Internet network from Florida’s Space Coast. Liftoff of a Falcon 9 rocket is set for Thursday afternoon from pad 39A at NASA’s Kennedy Space Center in Florida, weather permitting.