Summary
NASA Marshall Space Flight Center (MSFC) issued NextSTEP-3 Appendix B: Moon Base Demonstrations to solicit industry-led demonstrations and studies that advance lunar base capabilities at TRL 6 and above. The announcement uses a dual-path structure (Directed-Topic Calls and future Open-Topic Calls) and follows a two-step submission process (Step-1 White Paper, Step-2 invited full proposals); NASA intends to award firm-fixed-price contracts with milestone payments. The ordering period remains open through 2029 with the current offers due date of August 17, 2026, and performance centered at George C. Marshall Space Flight Center in Huntsville, Alabama.