Description: L'Union astronomique internationale (UAI) est une société d'astronomes professionnels du monde entier qui travaillent actuellement sur différents aspects de la recherche, de l'enseignement ou de la vulgarisation en astronomie. Fondée en 1919, elle développer des activités de vulgarisation et d'éducation pour le public, tout en promouvant la recherche active en astronomie par le biais de réunions scientifiques.

Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher
The translation of this term and its definition is still awaiting approval

The OAE Multilingual Glossary is a project of the IAU Office of Astronomy for Education (OAE) in collaboration with the IAU Office of Astronomy Outreach (OAO). The terms and definitions were chosen, written and reviewed by a collective effort from the OAE, the OAE Centers and Nodes, the OAE National Astronomy Education Coordinators (NAECs) and other volunteers. You can find a full list of credits here. All glossary terms and their definitions are released under a Creative Commons CC BY-4.0 license and should be credited to "IAU OAE".