Scientists Publish the First Direct Measurement of Space Debris Pollution
📖 Full Retelling
Back in February 2025, a SpaceX rocket that had delivered 22 Starlink satellites to orbit had a malfunction. It failed to execute a planned deorbit burn and drifted for 18 days in orbit before beginning an uncontrolled descent about 100km off the west coast of Ireland. Some parts of the rocket landed in Poland, and while they didn’t injure anybody, there was enough concern about the lack of communication that Poland dismissed the head of its space agency. But that wasn't the only lasting impact
Entity Intersection Graph
No entity connections available yet for this article.
Original Source
Scientists Publish the First Direct Measurement of Space Debris Pollution By Andy Tomaswick - March 05, 2026 12:38 PM UTC | Observing Back in February 2025, a SpaceX rocket that had delivered 22 Starlink satellites to orbit had a malfunction. It failed to execute a planned deorbit burn and drifted for 18 days in orbit before beginning an uncontrolled descent about 100km off the west coast of Ireland. Some parts of the rocket landed in Poland, and while they didn’t injure anybody, there was enough concern about the lack of communication that Poland dismissed the head of its space agency. But that wasn't the only lasting impact of this failure. A new paper from Robin Wing and her colleagues at the Leibniz Institute for Atmospheric Physics, published in Communications Earth & Environment ties that specific rocket reentry to a massive plume of pollution for the first time. To do this, they used a highly sensitive resonance fluorescence lidar system, located in Kühlungsborn, Germany. But they weren’t doing it specifically to check for the fallout from this launch. They were simply monitoring the upper atmosphere, like atmospheric scientists tend to do. But right around midnight on February 20, 2025, they noticed a spike in lithium vapor levels. Lithium is not something typically found at high concentrations in the atmosphere, but it is one of the primary components of a Falcon 9 rocket stage. In the atmosphere, lithium levels are regularly around 3 atoms per cubic centimeter. Just 20 hours after the Falcon 9 rocket descended, the density spiked up to 31 atoms per cubic centimeter - crucially at an altitude of between 94.5 and 96.8km. Fraser discusses the problems of dealing with space junk. Extraordinary claims require extraordinary evidence, and tying the plume of lithium back to a specific rocket entry will take more than just saying “ohh look, this rocket just crashed, and there are higher lithium levels now.” So the authors turned to atmospheric modeling. They ran 8,...
Read full article at source