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The International Astronomical Union Center for the Protection of the Dark and Quiet Sky from Satellite Constellation Interference expresses concern about the recently launched prototype BlueWalker 3 satelliteâ€™s impact on astronomy. New measurements reveal that this low Earth orbiting satellite is now one of the brightest objects in the night sky, outshining all but the brightest stars. In addition, the satelliteâ€™s use of terrestrial radio frequencies poses a new challenge to radio astronomy.
The XXXI General Assembly of the International Astronomical Union (IAU) ends today in Busan, Korea. Having been postponed by one year due to the COVID-19 pandemic, the meeting took place as the first hybrid General Assembly, with around 1200 in-person participants and around 700 attending online. The conference included seven symposia, 10 multi-session Focus Meetings, as well as many more meetings of IAU Divisions, Commissions and Working Groups.