Institutes and Professional Associations
- American Association for the Advancement of Science (AAAS)
- Canadian Aeronautics and Space Institute (CASI)
- Committee for Space Research (COSPAR)
- International Academy of Astronautics (IAA)
- International Association for the Advancement of Space Safety (IAASS)
- International Astronautical Federation (IAF)
- International Space Science Institute (ISSI)
Space Agencies
- Brazil - Brazilian National Institute for Space Research (INPE)
- Canada - Canadian Space Agency (CSA)
- China - China National Space Administration
- France - Centre National d'Etudes Spatiales (CNES)
- Germany - German Aerospace Center (DLR)
- India - Indian Space Research Organisation (ISRO)
- Italy - Agenzia Spaziale Italiana (ASI)
- Japan - Japan Aerospace Exploration Agency (JAXA)
- Russia - Federal Space Agency (Roscosmos)
- The Netherlands - ESA in your country (ESA)
- United Kingdom - UK Space Agency
- United States - Official NASA site
Space News