The third U.S. National Climate Assessment was released which took observations from NASA's fleet of satellites to help understand climate change in the United States.
Also, NASA's Orbiting Carbon Observatory-2 spacecraft arrived at California's Vandenberg Air Force Base to begin final preparations for a scheduled July 1 launch. In Florida, the remaining flight hardware for the Delta IV rocket that will launch NASA's Orion spacecraft on Exploration Flight Test-1 in December arrived at Port Canaveral. At the Stennis Space Center, a cold-shock test for the RS-25 engine that will help power NASA's new Space Launch System rocket was completed. The Chandra X-ray Observatory found new stars, simulated space dust was created on earth, a new ISS crew trains in Russia, Shannon Lucid and Jerry Ross are inducted into the Astronaut Hall of Fame and NASA recognizes the small business community for helping the agency work toward achieving its goals.