Board member of the Finnish Astronomical Society, 2000-2001, M. Tornikoski.
Finland's delegate to the Scientific Comission J (Radio Astronomy) of the International Union of Radio Science (URSI), 2000-2002, M. Tornikoski.
Member of the scientific organizing committee of the 2001 Nordic Baltic Summer School in Radio Astronomy: ``Radio Universe'', 2000-2001, M. Tornikoski.
Member of the programme committee of Antares = Academy of Finland and National Technology Agency Research Programme for Space Research, M. Tornikoski.
Chairman of the Finnish working group on space research institute/Ministry of Education, S. Urpo.
AAS, American Astronomical Society, member S. Urpo.
AMS, Tekes Guiding Group, member S. Urpo.
Planck, Tekes Steering Group, member, S. Urpo.
COSPAR, Committee on Space Research, Finnish National Committee, member, S. Urpo.
COSPAR, Commission E2, Solar Physics, member S. Urpo.
EAS, European Astronomical Society, founding member S. Urpo.
ESA, European Space Agency, SPC Science Programme Committee delegate S. Urpo.
EVN, European VLBI Network Board of Directors, member S. Urpo.
EVN, European VLBI Network, Technical Operations Group, (TOG), FS subgroup chairman, A. Mujunen.
Finnish Space Committee, permanent adviser S. Urpo.
Hvar Observatory Bulletin, Board of Editors S. Urpo.
IAG, associate member S. Urpo.
IAU, Finnish National Committee, member S.Urpo.
INTAS Project INTAS-RFBR-95-316, coordinator S. Urpo.
RISC, Radioastron International Science Committee, member S. Urpo.
Tuorla Observatory, member of the Board S. Urpo.
URSI, Finnish National Committee, vice member S. Urpo.
Working Group for Finnish-Russian Cooperation in Space Field, member S. Urpo.
Planck LFI Consortium meeting, LOC member, S. Urpo.