At Cornell, Sagan was associate director of which center from 1972 to 1981?

At Cornell, Sagan was associate director of the Center for Radiophysics and Space Research from 1972 to 1981.

The center, commonly abbreviated CRSR, reflected Cornell's interdisciplinary approach to astronomy and space science. Its work connected radio astronomy, planetary studies, astrophysics, and the growing use of spacecraft and remote sensing to investigate the Solar System. That environment suited Sagan, whose research crossed traditional departmental boundaries.

Sagan's role was part of a productive period at Cornell. He had become a full professor in 1970 and directed the Laboratory for Planetary Studies while collaborating with scientists including Frank Drake and Thomas Gold. The CRSR should not be confused with the Space Telescope Science Institute or a specialized astrobiology center: its name emphasized radiophysics and space research, the exact title used in the historical record.