Video: Atlas 5 GPS 2F-8 Launch Highlights

Watch the first spacecraft in a new generation of Russian Progress cargo vehicles arrive at the International Space Station on December 23, 2015, bringing a holiday delivery of more than 5,000 pounds of fuel, water and supplies for the research lab’s six-person crew.

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

This is the ascent timeline to be followed by the United Launch Alliance Atlas 5 rocket in launching the Mobile User Objective System satellite No. 5 on Friday at 10:30 a.m. EDT (1430 GMT).