Video: NROL-37 payload and Delta 4-Heavy rocket prepped for launch

A replay of the United Launch Alliance Atlas 5 rocket launching the Navy’s Mobile User Objective System communications satellite No. 4 from Cape Canaveral, Florida.

NASA’s acting administrator said Tuesday he does not expect Russian cosmonauts to start launching to the International Space Station on U.S. commercial crew vehicles until next year. A proposed agreement with Russia to ensure the space station is always staffed with an international crew is awaiting U.S. government approval.

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.