The International Astronomical Union (IAU) is voicing concerns about the risk that SpaceX's Starlink and other planned massive satellite constellations in low Earth orbit pose to astronomy.
"The organization, in general, embraces the principle of a dark and radio-quiet sky as not only essential to advancing our understanding of the Universe of which we are a part, but also as a resource for all humanity and for the protection of nocturnal wildlife. We do not yet understand the impact of thousands of these visible satellites scattered across the night sky and despite their good intentions, these satellite constellations may threaten both."
