A SpaceX Falcon 9 rocket powered by a reused first stage climbed into orbit Tuesday from California’s Central Coast, carrying five satellites to upgrade Iridium’s global messaging service and two research craft to study Earth’s water cycle.

United Launch Alliance’s next Atlas 5 rocket moved to its launch pad Wednesday at Cape Canaveral, taking position for liftoff with the U.S. military’s sixth and final Advanced Extremely High Frequency secure communications satellite.

Eight months after last hearing from the Opportunity rover, NASA officials announced the end of the craft’s 15-year mission Wednesday, closing out an ambitious chapter of Mars exploration that proved the Red Planet once harbored running water and demonstrated the promise of mobile robotic scouts to survey other worlds.