Q&A with NASA Administrator Jim Bridenstine (members only)

A towering mobile platform for the agency’s Space Launch System arrived at launch pad 39B Friday at the Kennedy Space Center in Florida for a sequence of water and propellant flow tests, swing arm checkouts and other rehearsals that should conclude with managers declaring the spaceport’s ground systems ready to support the first SLS launch campaign by the end of the year.

The United Launch Alliance flight highlights reel for the Delta 2 rocket and NASA’s SMAP observatory from Vandenberg Air Force Base in California.

NASA’s OSIRIS-REx, the spacecraft that will grab a piece of Asteroid Bennu and return it to Earth, shipped to Kennedy Space Center from the Lockheed Martin production facilities in Denver on May 20 aboard an Air Force C-17.