An ultra-black coating for satellites could stop them spoiling astronomy pictures

By Noelia Noël, Senior Lecturer, School of Mathematics and Physics, University of Surrey

Every night, as telescopes around the world open their domes to study the cosmos, astronomers are forced to contend with an unexpected form of pollution: bright white streaks slicing across their images.

These luminous trails are caused by satellites. Specifically, the growing number of “megaconstellations” launched into low Earth orbit (LEO). These mega-constellations consist of many, sometimes hundreds, of satellites. They are intended to work as a system, providing services…

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