SpaceX is ready to send up its first test flight of the year for its Starship and Super Heavy rocket from Texas, but delayed it one day to Thursday, when the company will once again go for a booster catch back at the launch site.

SpaceX readies its seventh test flight of Starship, the most powerful rocket ever designed. The trial will test upgrades to the spacecraft and deploy mock satellites.

SpaceX will launch Starship for a seventh test flight on Wednesday, an experiment that will feature the spacecraft’s first payload deployment test, marking what could be the latest milestone for the Elon Musk-owned aerospace company as it develops reusable rockets.