Episode Details

Note: A PDF of his House testimony including factual and quantitative analysis is available on line & at www.thespaceshow.com for the Dec. 21, 2025 Space Show program with Mike. He testified before the House on Dec. 4, 2025.

The Space Show Presents Dr. Mike Griffin, Tuesday, Dec. 23, 2025

Quick Summary:

Our program with guest Dr. Mike Griffin primarily focused on discussing NASA’s current lunar exploration program and its challenges, with extensive testimony from Mike about the technical limitations and risks of the Artemis III plan. The participants explored alternative architectures and technical solutions, including the need for orbital flight tests and cryogenic propellant management capabilities. The discussion concluded with concerns about the program’s timeline and infrastructure limitations, while emphasizing the importance of U.S. leadership in space exploration and the need for more diverse expert participation in future discussions.

David and Mike discussed the challenges and concerns surrounding NASA’s current approach to returning to the moon, with Mike emphasizing that the existing plans with SpaceX and Blue Origin are unlikely to succeed. They highlighted the need for a different launch system and expressed frustration over the perceived mismanagement of the mission timeline. The conversation also touched on the potential for additional space vehicles to support lunar missions, though Mike noted that the current architecture does not require them. David introduced the evening’s program and mentioned that Mike’s testimony would be a key focus, setting the stage for a detailed discussion on the future of lunar exploration.

Dr. Griffin testified before Congress about China’s moon program and the United States’ response, emphasizing that China is actively developing lunar capabilities while the U.S. lacks a coherent strategy at a special House committee meeting on Dec. 4, 2025. He criticized the Artemis III plan, arguing it cannot succeed due to technical challenges with cryogenic propellant storage and the near rectilinear halo orbit design, which leaves crews stranded for extended periods. Dr. Griffin proposed an alternative dual-launch architecture using the SLS, similar to China’s approach, but acknowledged that the U.S. needs more heavy lift capacity.

Mike explained that switching the program of record to a new architecture would require a significant commitment and involve multiple steps, including the new NASA administrator investigating the controversy, the president approving a change, and Congress appropriating funds. He emphasized that the current Artemis program architecture will not work and offered an alternative solution, while noting that other approaches could also succeed. I inquired about the process to switch the program of record, and our guest outlined the steps that would need to be taken, including potential sole source assignments to contractors.

Our Space Show Wisdom Team discussed the technical challenges and feasibility of NASA’s lunar mission concept, focusing on the difficulties of cryogenic propellant management and boil-off control in the lunar environment. Mike emphasized that the mission’s current design lacks necessary expertise and experience, particularly in maintaining cryogenic temperatures for extended periods, and expressed concerns about the potential risks to crew safety. The participants agreed that the concept, as currently proposed, is unlikely to succeed within a reasonable timeframe. Marshall highlighted the specific challenge of managing heat on the sunlit lunar surface. I inquired about SpaceX’s perspective regarding the challenges and risks, but Mike clarified that he could not speak for SpaceX engineers and emphasized that no amount of engineering brilliance can rescue a fundamentally flawed concept.

We continued discussing concerns about the U.S. lunar exploration program and its