LIFTOFF! by Staff May 23, 2018 May 23, 2018 47 views 47The GRACE Follow-On spacecraft launched onboard a SpaceX Falcon 9 rocket, Tuesday, May 22, 2018.Source: nasa.gov 0 FacebookTwitterPinterestEmail previous post GRACE-FO Launches to Provide a Unique View of Earth’s Climate next post 9 Heartwarming Times Strangers Helped Struggling College Students