According to Imperial College London, the BlueWalker 3 satellite possesses the largest commercial antenna system ever deployed in low-Earth orbit, occupying 64 square meters. This development raises concerns regarding light pollution. While scientists are accustomed to observing satellites during their research, the resulting streaks must be digitally altered in the final images. Correcting these images becomes a daunting task when a succession of satellites, like the Starlink trains, pass by. The massive reflective profile of BlueWalker 3 could exacerbate this problem.

Referred to as artificial light at night (ALAN), light pollution caused by these large satellites not only creates optical interference but also generates radio interference. Experts insist that these issues must be addressed simultaneously. The International Astronomical Union has published an extensive report [PDF] that sheds light on the extent of the problem and offers guidelines for maintaining the integrity of astronomical research in the face of man-made satellites. Additionally, there is a concern about preserving the cosmic heritage. SpaceX has already obtained a permit from the FCC to launch 12,000 satellites and plans to launch another 30,000 units. Scientists worry that these satellites will obstruct the clear view of the night sky not just for themselves, but also for amateur stargazers.