.SEWHEREHarper Elliott Van Ness Jr.,87, a retired Navy captain and aviator who contributed to missile development and space research, died March 20 in Bethesda, Md.Van Ness continued his career in the aerospace field after retiring from the Navy in 1969, working with the Project Viking mission to Mars and later organizing funding for programs at the Smithsonian National Air and Space Museum.From 1959 to 1961 at the Office of Naval Operations in Washington, he played a key role in establishing the Naval Space Surveillance System and the project transit field office that provided weather data to the naval fleet. Later, at the Office of Manned Space Flight at NASA, he participated in projects Mercury, Gemini and Apollo. After retiring from active duty, he became deputy project manager for NASA’s Project Viking and contributed to the successful landing of the Viking space probes on Mars.