SpaceX will launch Starship for a seventh test flight on Thursday, after weather concerns pushed back an experiment that will feature the spacecraft’s first payload deployment test, in what may be the latest milestone for the Elon Musk-owned aerospace company as it develops reusable rockets.

The Starship was carrying 10 dummy satellites to practice how to release them, and it was programmed to soar across the Gulf of Mexico from Texas on a near loop around the world.