Atlas 5 NROL-55 launch full broadcast

Meteorologists predict mostly sunny skies, mild temperatures and light winds Sunday for the launch of a SpaceX Falcon 9 rocket from California’s Central Coast with a $364 million oceanography satellite for U.S. and European science institutions.

Ziplines are used by thrill-seekers in adventures around the world, but now they are coming to the U.S. space program as the emergency escape system for personnel at Cape Canaveral’s Complex 41.

Sky-watchers with a passion for looking up and tracking satellites with remarkable precision have made quick work of locating the spacecraft launched atop an Atlas 5 rocket on Thursday.