University of Surrey Develops Ultra-Black Satellite Coating as 1.7 Million Launches Threaten Night Skies
Updated
Updated · Universe Today · Jul 9
University of Surrey Develops Ultra-Black Satellite Coating as 1.7 Million Launches Threaten Night Skies
3 articles · Updated · Universe Today · Jul 9
Summary
Vantablack 310 made simulated low-Earth-orbit satellites faint enough to approach the International Astronomical Union’s recommended brightness limit, offering a practical way to curb reflected sunlight.
The coating targets glare from satellite surfaces and solar arrays, a growing problem as nearly 20,000 active satellites already crowd low Earth orbit and streaks disrupt surveys such as the Vera C. Rubin Observatory’s 10-year LSST.
University of Surrey researchers and Surrey NanoSystems are preparing an in-orbit test on the student-led Jovian-1 CubeSat to measure the coating’s durability in space and whether ground observers can detect the brightness reduction.
With 1.7 million satellites expected to launch in coming years, the team argues simple surface-material changes could protect astronomy and darker night skies without major satellite redesigns.
Beyond saving astronomy, what is the business case for companies to coat their satellites in black?
Could making satellites darker to telescopes create a bigger threat from untrackable space debris?
Will tech fixes like Vantablack lead to mandatory rules for satellite companies, or remain an optional extra?
The Growing Crisis of Satellite-Induced Light Pollution: Industry, Regulation, and the Vantablack 310 Solution
Overview
The rapid growth of satellites in Low Earth Orbit, driven by rising demand for communication and earth observation, is creating a crisis for astronomy. As more satellites are launched by both startups and government agencies, space congestion and orbital debris increase, leading to brighter night skies and worsening light pollution. This makes it harder to see stars and threatens astronomical research. The problem is urgent, as studies show night sky brightness is rising by nearly 10% each year, erasing fainter stars from view and forcing astronomers to seek remote locations for their work.