Snapshots from Atlas 5 launch

An hour after OSIRIS-REx separated from the United Launch Alliance Atlas 5 rocket on its trajectory to Asteroid Bennu, officials from NASA, the University of Arizona, ULA and Lockheed Martin held the post-launch news conference from Kennedy Space Center.

Liftoff of the resupply mission, atop a Falcon 9 rocket from Space Launch Complex 40 at Cape Canaveral Space Force Station is scheduled for 6:05 p.m. EDT (2205 UTC). The Cargo Dragon is loaded with 6,500 pounds of science and supplies for the space station.

SpaceX rolled the first Crew Dragon spacecraft out to a Florida launch pad Thursday for final preparations ahead of a test flight to the International Space Station.