Video: Delta 4 launches before dawn from California

A Russian Soyuz-2.1b booster is standing at the Complex 31 launch pad at the Baikonur Cosmodrome in Kazakhstan for liftoff with 34 OneWeb broadband satellites early Friday, local time.

The stacking of a United Launch Alliance Atlas 5 rocket this week at Cape Canaveral signals the start of a busy six-week campaign to ready ULA’s trusty workhorse launcher for its debut in a new human-rated configuration in mid-December.

Two space informants to track objects in geosynchronous orbit have been mounted atop their Delta 4 launch vehicle for liftoff Aug. 19.