A SpaceX Falcon 9 booster blasted off from Vandenberg Air Force Base on Tuesday afternoon and successfully orbited seven satellites. There were five Iridium-NEXT communications satellites aboard. These were the 51st through 56th Iridium-NEXT spacecraft orbited by Falcon 9 boosters. A pair of Gravity Recovery and Climate Experiment Follow-On (GRACE-FO) satellites were also onboard. The spacecraft will measure changes in how mass is redistributed within and among Earth’s atmosphere, oceans, […]