Network Extension for User Continuity and Sustainability (NEXUS) Ka-Band Backward-Compatible Relay Broad Agency Announcement (BAA) NextSTEP-3 Appendix E - Draft Solicitation

UPDATE 5: Update summary level description, and two draft attachment updates incorporated as follows: A_NEXUS TDRS-BC Statement of Objectives (SOO)_20260522 (Draft), and B_Service Requirements Document_CUI_ITAR_20260522 (Draft) NASA intends to release a BAA under Next Space Technologies for Exploration Partnerships (NextSTEP-3), Appendix E, for Project NEXUS, Ka-band Backward- Compatible Relay. As the aging Tracking and Data Relay Satellite System (TDRSS) declines, NASA’s objective is to acquire an end-to-end Ka-band relay service (end-to-end must include: space, ground, launch, integration, and operations elements) that is backward compatible with legacy TDRSS users for a minimum of fifteen years. This capability is needed to support select on-orbit missions that cannot feasibly modify flight hardware or transition to non-compatible commercial services. To reduce growing continuity risk in the 2029- 2031 timeframe, industry is asked to develop and demonstrate this end-to-end capability. The BAA will be a phased competitive Research and Development (R&D) acquisition. NASA anticipates multiple initial Firm-Fixed-Price (FFP) awards. NASA does not anticipate being the sole commercial customer and anticipates proposed solutions to be supported by a broader commercial business case beyond NASA. NAICS: Phases 1–3: 541715. NASA seeks to accelerate maturation of commercially viable capabilities through competitive research demonstrations to support transition to future operational services,. All proposed satellite orbit solutions are acceptable notwithstanding that the proposed solutions will be expected to include all elements necessary for industry to develop, deliver and sustain the end-to-end relay service capability, including, but not limited to: Space segment, associated launch services, as applicable, ground and network infrastructure, and service operations and maintenance. Accordingly, NASA may use knowledge gained through this BAA, including demonstration results