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5th of July 2022
Protection of the Dark and Quiet Sky
The IAU Centre for the Protection of the Dark and Quiet Sky from Satellite Constellation Interference (CPS) coordinates collaborative multidisciplinary international efforts with institutions and individuals and works across multiple geographic areas to help mitigate the negative impact of satellite constellations on ground-based optical and radio astronomy observations as well as on humanity's enjoyment of the night sky. Astronomers became acutely aware of the impact of satellite constellations with the launch of the first 60 Starlink satellites in May 2019. Thereafter, 150 experts from astronomy, industry, space policy and the wider community conducted months of research before presenting and then publishing on the impact of satellite constellations on astronomy to identify the issues and formulate recommendations toward mitigation. Stakeholders extend beyond astronomers and the satellite industry and include planetarium operators, amateur astronomers, and Indigenous groups. The IAU Centre was launched last month. The co-hosts of the CPS are the US National Science Founndation's NOIRLab (the US centre for ground-based optical astronomy), and the SKA Observatory (SKAO).

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