Astronomers warn of ‘worrisome’ light pollution from satellite constellations

The International Astronomical Union has issued the preliminary results from a study on the potential effects of multi-thousand satellite constellations like that being built by StarLink. Finding that Earth-based astronomical observations may be “severely affected,” the body warned that mitigations and rules had better be formed sooner rather than later.
The group expressed its concerns last summer, but undertook a broader study and survey of possible effects, asking various observat