The International Astronomical Union Celebrates its 100th Anniversary with the Dark Skies for All Project

In 2019, the International Astronomical Union (IAU) is celebrating its 100th anniversary. To commemorate this milestone, IAU100 is organising a year-long celebration to increase awareness of a century of astronomical discoveries as well as to support and improve the use of astronomy as a tool for education, development and diplomacy under the central theme “Under One Sky”. The centennial celebrations will stimulate worldwide interest in astronomy and science and will reach out to the global astronomical community, national science organisations, societies, policy-makers, students, families and the general public. The IAU100 activities will take place at global and regional levels, and especially at the national and local levels.