Award Joseph Henry Medal of the Smithsonian Institution

American Association for the Advancement of Science

American Academy of Arts and Sciences

National Academy of Sciences

Royal Astronomical Society (Fellow)

Sigma Xi

American Physical Society

Henry Norris Russell Lectureship (2014)

NASA Group Achievement Award, National Commission on Space (1986)

Karl Schwarzschild Medal (1984)

Smithsonian Institution Certificate of Award for Exceptional Services (1977)

NASA Public Service Medal (1977)