Mobile Launcher 2 (ML-2), the launch tower and platform to be used by the Block 1B variant of the Space Launch System (SLS), recently had its tenth and final tower module stacked on July 2. Module 10 will support the Orion crew access arm and related systems, and its installation brings the ML-2 tower’s height to 106 m. The overall ML-2 structure will be over 122 m tall and mass over 5,600,000 kg.
In other good news for the SLS and Artemis programs, Congress recently approved additional funding to preserve the Artemis IV and V missions, thereby maintaining SLS Block 1B and the rationale for using ML-2, which is only compatible with SLS vehicles from Block 1B forward.