Watch as SpaceX test-fires Falcon 9 ahead of Starlink launch (members only)

The U.S. Space Force says it will launch two GPS navigation satellites on reused Falcon 9 boosters next year through a restructured contract with SpaceX that saved taxpayers $52 million, the first time the military has agreed to fly operational national security payloads on previously-flown rockets.

One of four landing legs mounted to the base of SpaceX’s Falcon 9 booster failed to engage on the rocket’s final descent to a barge in the Pacific Ocean on Sunday, leaving wreckage scattered on the football field-sized deck of the landing ship after an otherwise successful launch with an ocean research satellite.

The world’s most distant weather outpost is set for liftoff from Cape Canaveral on Sunday aboard a SpaceX Falcon 9 rocket, launching to a point a million miles from Earth to warn forecasters of solar storms that could disrupt global air traffic, satellite navigation and power grids.