National
Astronomical consultant to the Swedish Museum of Natural History (Naturhistoriska Riksmuseet) for the planetarium/omnitheatre COSMONOVA, 1972 - date
Member of the Swedish National Committee for Astronomy, 1972 - 1995 (chairman 1983 - 1989, vice-chairman 1989 - 1992)
Chairman of the Working Group for Education (Swedish National Committee for Astronomy), 1973 - 1983, 1989 - 1992
Member of the "Svenska Omniteatern (COSMONOVA)" Foundation, 1984 - date (vice-chairman 1991 - date)
Member of a working group that developed Sweden's first "Astronomigymnasium" (Astronomy high school), 1985 - 1989
Member of the Fysikcentrum Working Group for Undergraduate and Graduate Studies, 1986 - 1988
Representative for NFR on the Observing Programme Committee at Onsala Space Observatory, 1986 - 1990
Representative for NFR on the Observing Programme Committee for SEST (Swedish ESO Submillimeter Telescope), 1987 - 1990
Representative for NFR on the board of Onsala Space Observatory, the Swedish National Facility for Radio Astronomy, 1990 - 1994
Initiator and member of working group which is designing and building, at Onsala Space Observatory, seven undergraduate laboratory radio astronomy telescope systems for distribution to astronomy and to physics institutes in Sweden and England, 1992 - date
Member of the Fysikcentrum Working Group for Multimedia, 1994 - 1995
International
Sweden's National Representative in IAU Commission 46, 1973 - 1996 (organizing committee 1982 - 1994, vice-president 1985 - 1988, president 1988 - 1991)
Swedish Representative on the European Astrophysics Doctoral Network (EADN), 1988 - date
Member of the Scientific Organizing Committees for (1) IAU Colloquium 105 "The Teaching of Astronomy, Present and Future", Wilmington, USA, 1988; (2) IAU Symposium 136 "The Galactic Center", Los Angeles, USA, 1988; (3) EADN Predoctoral Astrophysics School VI "Galactic Dynamics and N-Body Simulations", Thessaloniki, Greece, 1993
Representative for Sweden (NFR) on the Board of Directors for the European Journal Astronomy and Astrophysics, 1988 - date