Videos: Previewing SpaceX’s eighth International Space Station resupply launch

SpaceX’s Falcon 9 rocket ignited its nine Merlin main engines for several seconds Thursday at launch pad 39A in Florida, moving the previously-flown booster closer to a scheduled blastoff Monday with a Bulgarian communications satellite.

The U.S. military’s next GPS navigation satellite moved to a SpaceX launch facility late Thursday at Cape Canaveral, ready for attachment with a Falcon 9 rocket for liftoff June 30 to take the place of an aging GPS spacecraft launched from Florida’s Space Coast more than 20 years ago.

Dragon Freedom undocked from the space station at 1:05 a.m. EDT (1705 UTC) on Tuesday to begin its roughly 17-hour trip to splash down along Florida’s Gulf Coast. The parachute-supported splash down happened at 5:57 p.m. EDT (2157 UTC).