
Air et Espace
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ESO
ESO is the foremost intergovernmental astronomy organisation in Europe and the world's most productive astronomical observatory. It operates three sites in Chile — La Silla , Paranal and Chajnantor — on behalf of its fifteen member states. It builds ALMA together with international partners, and designs the European Extremely Large Telescope .If you are within listening range of an airport and have a police scanner or any airband-capable receiver, please consider becoming a LiveATC air traffic control feeder site.

