Radio telescopes observing the universe face increasing challenges from electromagnetic interference from thousands of satellites in low Earth orbit, and now experiments with SpaceX’s Starlink satellites have shown a way to virtually eliminate one form of the problem.
As these kinds of satellites orbit the Earth, they send so-called downlink signals to Earth to provide Internet and communication services. When they pass through the area of ​​the sky observed by radio telescopes, the strong signals can cause temporary buzzing that can last for hours…
Source: www.newscientist.com