This presolicitation announces an upcoming RFP for research and development support services for NRL’s Space Science Division, to be competed as a 100% small business set-aside. The resulting contract is expected to be a cost-plus-fixed-fee, level-of-effort contract with a five-year period of performance (base year plus four options), involving roughly 199,500 total labor hours divided evenly per year. The RFP is planned for issuance by 1 October 2026, with award anticipated under FAR Part 15 best-value tradeoff procedures. The applicable NAICS code is 541715, and the requirement is not commercial. Interested parties must be registered in SAM and monitor SAM.gov for the electronic solicitation.