Photos: Atlas 5 rocket soars from West Coast

European engineers who developed a small satellite hitching a ride to the International Space Station aboard a SpaceX supply ship Monday are gearing up for a first-of-a-kind experiment to examine ways to snare a chunk of space junk and tug it back to Earth.

SpaceX’s first upgraded Falcon 9 “Block 5” rocket was raised vertical at launch pad 39A early Thursday in preparation for liftoff from the Kennedy Space Center, debuting enhancements aimed at making the booster more reusable and more reliable.

The U.S. Air Force’s fourth Advanced Extremely High Frequency spacecraft launched Wednesday from Cape Canaveral on top of a United Launch Alliance Atlas 5 rocket, expanding the reach of the military’s most secure, jam-resistant satellite communications network.