Scientists Chase Falling Satellite to Study Atmospheric Pollution from Spacecraft Reentries
Scientists take advantage of the spectacular airborne chase of a falling satellite to gather rare data on atmospheric pollution from burnt-up spacecraft. In September 2024, a group of European researchers hopped on an aeroplane outfitted with 26 cameras and flew into the night sky to watch the satellite Cluster Salsa make its flaming return to Earth over the Pacific Ocean. The mission, which was launched from Easter Island, sought chemical byproducts that would have been released during that short, meteor-like reentry event. Despite the glare of bright natural light that impeded a clear view, the researchers captured for the first time images of the satellite fracturing and chemicals being released as it fell to Earth. Satellite Reentries May Impact Ozone and Climate, Scientists Warn As per the report presented at the European Conference on Space Debris, reentry produced lithium, potassium, and aluminum emissions — elements with the potential to impact the ozone layer and Earth’s climate. Stefan Löhle of the University of Stuttgart mentioned that the satellite’s weak trail indicated that pieces splintered off and burned with less ferocity than …
