Falcon Heavy hot fire as seen from Kennedy Space Center Press Site

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.

Virgin Galactic’s second piloted suborbital spaceship made its first rocket-powered test flight Thursday, three-and-a-half years after the loss of an earlier model in an accident that killed one test pilot and injured another.

With eyes on Tropical Storm Eta approaching South Florida, the four astronauts set to launch next Saturday on a SpaceX Crew Dragon spacecraft arrived at NASA’s Kennedy Space Center on Sunday after flying from their home base in Houston.