BROWNSVILLE, Texas — A test of SpaceX’s latest Starship Super Heavy booster encountered a significant setback Friday morning after a powerful explosion occurred during routine checks at the company’s facility near Starbase. The incident involved Booster 18, which is the inaugural model in the upgraded “Block 3” series of Starship boosters and was conducting gas-system pressure testing when it experienced a catastrophic failure.
Video footage from independent sources captured the moment around 4:04 a.m. local time when the lower section of the nearly 230-foot tall booster crumpled and partially disintegrated, sending debris and gas clouds spiraling into the air. Despite the severity of the explosion, the 20-story rocket remained upright at the test stand. However, post-explosion images revealed a large breach in the liquid oxygen tank and significant structural damage to the vehicle’s rear.
SpaceX quickly addressed the incident, stating that Booster 18 had “suffered an anomaly during gas system pressure testing” as part of preparations for upcoming structural proof tests. Notably, the rocket was not loaded with propellant, and no Raptor engines were installed at the time, allowing all personnel to maintain a safe distance and avoiding injuries.
Preliminary analysis from SpaceX and independent analysts indicates a likely failure in a component known as a composite overwrapped pressure vessel (COPV), which contained high-pressure gas. This failure seems to have initiated a chain of events leading to the rupture of the main liquid oxygen tank.
The explosion is a significant setback not only for SpaceX but also for its future plans, particularly concerning the testing and operation of its new Pad 2 infrastructure at Starbase. With Booster 18 now potentially unrepairable for future launches, analysts project that the next Starship test flight and the debut of the Block 3 model may face delays until a replacement, possibly Booster 19, can be constructed and transported to the launch pad.
While the loss of Booster 18 is undoubtedly a challenge, SpaceX officials emphasize the importance of rapid testing cycles, including failures, to evolve a fully reusable heavy-lift launch system. This approach is deemed critical for various missions, including the ongoing development of the Starlink satellite network, deep space exploration, and NASA’s Artemis lunar lander program.
As the aerospace community watches closely, SpaceX remains committed to advancing its ambitious goals in the ever-evolving landscape of space exploration.