A Soyuz rocket arrived at a launch pad Tuesday in Kazakhstan for liftoff later this week with a satellite to monitor natural disasters and track forest fires from orbit and 72 secondary payloads from Russia, the United States, Germany, Norway and Japan.

SpaceX’s next Falcon 9 rocket arrived at launch pad 39A Thursday for a customary hold-down engine firing. Liftoff from Florida’s Space Coast is targeted for Sunday, weather permitting.

A Russian Soyuz booster climbed into orbit Monday with a U.S. Army colonel, a veteran Russian cosmonaut and a Canadian flight engineer, kicking off a six-hour chase of the International Space Station.