The International Astronomical Union (IAU) was founded in 1919. Its mission is to promote and safeguard the science of astronomy in all its aspects through international cooperation.

Its individual members - structured in Divisions, Commissions, Working groups and Program Groups - are professional astronomers from all over the world, at the Ph.D. level and beyond, and active in professional research and education in astronomy. In addition, the IAU collaborates with various organizations all over the world.

The key activity of the IAU is the organization of scientific meetings. Every year the IAU sponsors nine international IAU Symposia. The IAU Symposium Proceedings series is the flagship of the IAU publications. Every three years the IAU holds a General Assembly, which offers six IAU Symposia, some 25 Joint Discussions and Special Sessions, and individual business and scientific meetings of Divisions, Commissions, and Working Groups. The proceedings of Joint Discussions and Special Sessions are published in the Highlights of Astronomy series. 

Helios-A and Helios-B (also known as Helios 1 and Helios 2), are a pair of probes launched into heliocentric orbit for the purpose of studying solar processes. A joint venture of the Federal Republic of Germany (West Germany) and NASA, the probes were launched from the John F. Kennedy Space Center at Cape Canaveral, Florida, on Dec. 10, 1974, and Jan. 15, 1976, respectively.

Helios II is a military satellite for Earth observation. It is operating since April 2005.

It is operated jointly by France, Belgium, Spain, Greece and Italy.

The WiggleZ Dark Energy Survey is a large-scale galaxy redshift survey which was carried out over 276 nights at the Anglo-Australian Telescope between Aug. 2006 and Jan. 2011.

The aim of the project is to analyze the galaxy distribution in  order to learn more about the nature of dark energy.

Skynet is a family of military satellites, now operated by Paradigm Secure Communications on behalf of the UK Ministry of Defence, which provide strategic communication services to the three branches of the British Armed Forces and to NATO forces engaged on coalition tasks.

The International Centre for Radio Astronomy Research is a collaborative centre based in Perth, Western Australia.  

ICRAR has grown steadily since has been created in September 2009.

The Italian Space Agency (Italian: Agenzia Spaziale Italiana; ASI) is a government agency established in 1988 to fund, regulate and coordinate space exploration activities in Italy.

Operating under the Ministry of Education, Universities and Research, the agency cooperates with numerous national and international entities who are active in aerospace research and technology.

The Norwegian Space Centre (NSC) (Norwegian: Norsk Romsenter) is a Norwegian government agency that promotes space exploration.

NSC is a subsidiary of the Norwegian Ministry of Trade and Industry. It supports the European Space Agency. 

The International Space Elevator Consortium (ISEC) promotes the development, construction and operation of a Space Elevator (SE) as a revolutionary and efficient way to space for all humanity. We are made up of organizations and individuals from all around the world who share a vision of humanity in space.

ISEC is designed around four central pillars: Technology, Business, Legal and Outreach. Each pillar has several offshoot programs to encourage the development and sharing of knowledge surrounding a SE.

The idea for an organization like ISEC has been discussed for years but it wasn’t until the Space Elevator Conference in Redmond, Washington in July of 2008 that things became serious. Interest and enthusiasm for the SE reached critical mass at this Conference and, with additional SE conferences upcoming in both Europe and Japan it was felt that this was a good time to formalize an international organization. An initial set of Directors and Officers were elected and they immediately began the difficult task of unifying the disparate efforts of Space Elevator supporters world-wide. ISEC's first Strategic Plan was adopted in January of 2010 and it is now the driving force behind ISEC's efforts. This Strategic Plan calls for adopting a yearly theme (for 2010 it's "Space Elevator Survivability - Space Debris Mitigation") and focuses ISEC activities around it. 

MEASAT Satellite Systems Sdn. Bhd., formerly Binariang Satellite Systems Sdn. Bhd is a Malaysian communications satellite operator, which owns and operates the MEASAT (Malaysia East Asia Satellite) spacecraft.

As of 2006, the MEASAT satellite network consists of three geostationary satellites designed and built by Boeing Satellite Systems. MEASAT-1 and MEASAT-2 were launched in 1996 and MEASAT-3 in 2006.