The National Aeronautics and Space Administration (NASA) is soliciting industry-led proposals for the ROSES-24 D.19 Habitable Worlds Observatory System Technology Demonstrations and Mission Architecture Studies (HWOTAS). This opportunity aims to conduct system-level critical technology demonstrations for ultra-stable observatories and mission architecture studies for the Habitable Worlds Observatory. The successful proposals will contribute to advancing the capabilities necessary for future space exploration and research focused on habitable worlds. Proposals are due by February 6, 2025, and interested parties can reach out to Julie A. Crooke at julie.a.crooke@nasa.gov for further information.