Past affiliation(s) within the IAU

• Past Organizing Committee Member of Commission 21 Galactic and Extragalactic Background Radiation (1973-1976)
• Past Member of Division D High Energy Phenomena and Fundamental Physics (until 2017)
• Past Member of Division F Planetary Systems and Astrobiology (until 2017)
• Past Member of Division H Interstellar Matter and Local Universe (until 2017)
• Past Member of Division J Galaxies and Cosmology (until 2017)
• Past Member of Commission 21 Galactic and Extragalactic Background Radiation (until 2015)
• Past Member of Commission 34 Interstellar Matter (until 2015)
• Past Member of Commission 44 Space & High Energy Astrophysics (until 2015)
• Past Member of Commission 51 Bio-Astronomy (until 2015)
• Past Member of Division III Planetary Systems Sciences (until 2012)
• Past Member of Division VI Interstellar Matter (until 2012)
• Past Member of Division XI Space & High Energy Astrophysics (until 2012)