GRACE-FO Prelaunch Briefing A photo showing the The twin GRACE-FO spacecraft installed on top of the five Iridium NEXT communications satellites is seen as experts discuss the Gravity Recovery and Climate Experiment Follow-On mission during a prelaunch media briefing, Monday, May 21, 2018, at Vandenberg Air Force Base in California. The twin GRACE-FO spacecraft will measure changes in how mass is redistributed within and among Earth's atmosphere, oceans, land and ice sheets, as well as within Earth itself.

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Keywords: 30th, bill, california, centre, geosciences, german, ingalls, research, space, wing