Video: Atlas/Cygnus pre-launch news conference

Desperately needing a successful deployment to modernize the communications infrastructure for its citizens, Mexico is counting on the Atlas 5 rocket to safely launch a new satellite Friday.

Watch the Atlas 5 rocket and OSIRIS-REx asteroid sample return spacecraft pre-launch news conference and the mission science briefing held on Launch-minus 2 days at the Kennedy Space Center.

Astronauts Butch Wilmore and Terry Virts suited up and ventured outside the International Space Station on Sunday on their third spacewalk in eight days to install equipment to help future commercial crew capsules built by Boeing and SpaceX navigate to the complex.