Photos: Atlas 5 rolls out for launch

Technicians around Cape Canaveral spent the last four weeks assembling a United Launch Alliance Atlas 5 rocket and preparing a Lockheed Martin-built NOAA weather satellite for liftoff March 1.

United Launch Alliance will need to lure commercial customers to ensure the economic viability of its new Vulcan rocket, which is set to debut in 2019 just as the rate of U.S. military satellite launches is due to take a dip.

After four weeks of navigating in the vicinity of asteroid Bennu, NASA’s OSIRIS-REx spacecraft fired its thrusters for eight seconds Monday to slip into orbit around the carbon-rich object, making Bennu the smallest planetary body ever orbited by a spacecraft.