My local meteorologist discussed Elon Musk’s satellite train here.
https://www.facebook.com/54875673475/posts/10157967732128476/?d=n
When I mentioned it to my astronomer son (who's sheltering with us from his usual location in California), he said that Musk's satellites are a huge issue with the astronomer community. Musk has provided a huge number of extraneous light sources -- very bright when illuminated by the sun -- that astronomers now have to account for when surveying the cosmos.