Live coverage: Falcon 9 disintegrates after launch

Four more satellites for SES Networks’ O3b broadband fleet launched Thursday aboard a Soyuz rocket. Liftoff of the Soyuz launcher from the Guiana Space Center in South America occurred at 1703 GMT (1:03 p.m. EDT).

Engineers erected a commercial Antares rocket vertical on its launch pad on Virginia’s Eastern Shore Friday, positioning the 13-story booster for liftoff Sunday night with more than 5,000 pounds of supplies and experiments for the International Space Station.

Japan’s Kounotori 6 cargo carrier will get a 15-minute boost from a powerful H-2B rocket to send the supply ship and its 4.5 tons of provisions and experiments on a four-day pursuit of the International Space Station.