Keith’s note: According to a GAO report issued today: “Space Launch System: Cost Transparency Needed to Monitor Program Affordability“: “Because the original SLS version’s cost and schedule commitments, or baselines, were tied to the launch of Artemis I, ongoing production and other costs needed to sustain the program going forward are not monitored. Instead, NASA created a rolling 5-year estimate of production and operations costs to ensure that the costs fit within NASA’s overall budget. However, neither the estimate nor the annual budget request track costs by Artemis mission or for recurring production items. As a result, the 5-year estimate and the budget requests are poor measures of cost performance over time. In 2014, GAO recommended that NASA develop a cost baseline that captures production costs for the missions beyond Artemis I that fly SLS Block I. NASA intends to fly SLS Block I for Artemis II, planned for 2024, and Artemis III, planned for 2025. NASA partially concurred, but has not yet implemented this recommendation. A cost baseline would increase the transparency of ongoing costs associated with SLS production and provide necessary insights to monitor program affordability.” Here are More posts in the continuing saga of what SLS actually costs. As if NASA will ever actually know who much these things cost. Why start now?