SpaceX has completed cryoproof testing of the Starship upper stage assigned to the next flight, designated Ship 39, moving the company closer to its first Starship launch of 2026. During testing the week of March 7, 2026, engineers examined the vehicle’s redesigned propellant system and its structural strength, including squeeze tests that mimic the forces involved in future ship catches by the Mechazilla arms at Starbase in Texas.
CEO Elon Musk stated on social media that the launch is approximately four weeks away, targeting April 2026 for Flight 12. This marks another delay from earlier projections, as the company continues to refine the vehicles and procedures necessary for the massive fully-stacked Starship system.
The testing conducted in early March represented one of the final major milestones before the launch authorization process begins. SpaceX has pursued an aggressive testing schedule with Starship, using each flight to gather data and implement improvements for subsequent vehicles. Ship 39 incorporates several design changes from earlier test articles, particularly in the propellant storage and delivery systems that are critical to achieving the vehicle’s performance goals.
Starship consists of two stages: the Super Heavy booster and the Starship upper stage. Together, the system stands approximately 123 meters tall and uses liquid methane and liquid oxygen as propellants. The vehicle is designed to be fully reusable, with both stages intended to return to Earth for refurbishment and reflight. This reusability is central to SpaceX’s vision for dramatically reducing the cost of accessing space.
The company has conducted six full-stack Starship flights to date, with varying degrees of success. Each mission has provided engineering data that informed modifications to later vehicles. The program has progressed from initial short hops to increasingly complex maneuvers, including attempts at booster catches using the tower-based Mechazilla system.
SpaceX operates Starship from its Starbase facility in Boca Chica, Texas, where the company has constructed extensive production and launch infrastructure. The location on the Gulf Coast provides access to convenient launch trajectories and recovery areas. The company has also received approval to launch Starship from Kennedy Space Center Launch Complex 39A for future missions.
NASA’s Artemis program depends on a human-rated version of Starship serving as the lunar lander for Artemis III and subsequent missions. The space agency selected Starship for this critical role based on its technical capabilities and development progress. Continued successful testing of the SpaceX system remains important to NASA’s lunar exploration timeline.
The upcoming Flight 12 will represent another step in SpaceX’s iterative development approach, gathering additional data on vehicle performance and operational procedures. The company has not announced specific objectives for the mission beyond the standard goals of testing flight characteristics and system reliability.






Subscribe to blog posts using RSS









