European Southern Observatory
The European Southern Observatory (ESO, formally the European Organisation for Astronomical Research in the Southern Hemisphere; Observatoire européen austral in French) is a 15-nation intergovernmental research organisation for astronomy. Created in 1962, ESO has provided astronomers with state-of-the-art research facilities and access to the southern sky. The organisation employs about 730 staff members and receives annual member state contributions of approximately €143 million. Its observatories are located in northern Chile.ESO has built and operated some of the largest and most technologically-advanced telescopes in the world.