Live coverage: Chinese sample return spacecraft completes docking in lunar orbit

SpaceX is preparing for liftoff Tuesday of its first mission for the U.S. Space Force, a launch from Cape Canaveral that will deploy a new GPS navigation satellite using a redesigned profile to allow the Falcon 9 rocket’s first stage booster to reserve enough propellant for landing on SpaceX’s drone ship in the Atlantic Ocean.

The UAE’s Hope mission is set for liftoff this week from Japan, taking aim on Mars with a package of scientific instruments designed to probe weather and climate change on the Red Planet.

SpaceX’s launch team loaded liquid propellants into the company’s first upgraded Falcon 9 Block 5 rocket Friday at the Kennedy Space Center in Florida, and the countdown rehearsal culminated in a brief ignition of the launcher’s nine Merlin main engines on the launch pad.