Video: Asteroid-sampling spacecraft ready for launch

NASA’s OSIRIS-REx spacecraft will be boosted into orbit aboard a United Launch Alliance Atlas V rocket from Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida. OSIRIS-REx stands for Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer. The U.S.'s first mission to sample an asteroid, OSIRIS-REx will travel to the near-Earth asteroid Bennu. Learn how this pioneering spacecraft and the Atlas V were readied for flight.