An experimental solar wing sent to the International Space Station earlier this month was jettisoned from the orbiting lab’s robotic arm after engineers were unable to fully retract the array.

Ready for a resupply run to the International Space Station, a SpaceX Falcon 9 rocket was raised vertical at Cape Canaveral’s Complex 40 launch pad Wednesday ahead of a planned liftoff with more than 5,700 pounds of science experiments and crew supplies.

The Falcon 9 rocket set to launch the SpaceX’s Crew Dragon capsule on a test flight in February briefly ignited its Merlin main engines on pad 39A at NASA’s Kennedy Space Center in Florida on Thursday. The Crew Dragon test flight to the International Space Station is a precursor to the spaceship’s first mission with astronauts later this year.