As Tom’s Hardware reports (https://www.tomshardware.com/tech-industry/space/spacex-vaporizes-260-starlink-satellites-in-six-months-using-earths-atmosphere-new-environmental-concerns-emerge-over-burning-2-700-pound-orbital-data-centers-fcc-seeks-to-exempt-satellites-from-regulations), SpaceX has deliberately removed 260 of its Starlink satellites from orbit over the past six months. These satellites are controlled to enter Earth's atmosphere and burn up there. This measure is part of routine maintenance and management of the Starlink network, which now comprises thousands of satellites.
Satellite disposal through atmospheric burning
The targeted deorbiting of satellites is an established process to reduce space debris. SpaceX uses the natural friction in the upper atmosphere to bring the satellites down in a controlled manner. The satellites mostly burn up, with only a few fragments reaching the Earth's surface. According to Tom’s Hardware, a typical Starlink satellite weighs about 1,200 kilograms, which means a significant mass is burned in the atmosphere.
Environmental concerns and new discussions
However, the burning of large amounts of satellite material in the atmosphere raises new environmental questions. Critics point out that the release of metals and other materials into the mesosphere could potentially affect the chemical composition and climate of the upper atmosphere. In particular, the burning of satellites weighing up to 1.2 tons each represents a little-studied burden.
Experts therefore call for further studies to better understand the long-term consequences of this practice. The debate is gaining importance as the number of satellites in orbit continues to rise rapidly due to projects like Starlink and other mega-constellations.
Bild: Barnabas Davoti / Pexels · Pexels · Pexels Lizenz: kostenlos nutzbar, Attribution freiwillig