SpaceX continued their 2018 campaign with the successful launch of five more Iridium Next satellites as well as two for NASA.
The NASA satellites consisted of two Gravity Recovery and Climate Experiment Follow-on (GRACE-FO) satellites which will measure variations in gravity over Earth’s surface.
The two Grace satellites were deployed shortly after the second stage reached orbit, it then coasted for 45 minutes before firing the engine for the second time and then deploying the five Iridium Next satellites.
This was the 10th launch of the year and the 9th for Falcon 9, this was also the 12th time that SpaceX used a previously flown booster. To date, SpaceX has successfully launched 56 times (2 Falcon 1, 53 Falcon 9 and one Falcon Heavy) and delivered 114 satellites, 15 Dragons, and a Roadster to orbit.