Tag: GRACE mission

SpaceX launches gravity-mapping probes plus another five Iridium telecom satellites

May 22, 2018

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SpaceX’s Falcon 9 rocket lifts off from California’s Vandenberg Air Force Base. (SpaceX via YouTube) A refurbished SpaceX’s Falcon 9 rocket sent two gravity-mapping satellites and five satellites for Iridium’s next-generation telecommunications network into orbit today on its second go-round. The soot-smudged first-stage booster previously flew in January to launch Zuma — a secret national security…