SpaceX delayed its seventh test launch of Starship by 24 hours on Wednesday due to weather concerns, pushing 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.

A SpaceX Starship prototype failed shortly after launching from Texas on Thursday, losing contact eight minutes after liftoff. The rocket, carrying mock satellites, exploded in space.