The International Astronomical Union has concluded a review of satellite mega constellations such as SpaceX’s Starlink satellites and found they will have a major impact on large telescopes, but not naked eye astronomy
Source:
https://www.newscientist.com/article/2233704-astronomy-group-finds-starlink-satellites-will-have-negative-impact/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home