News
Climate Impact · Geoengineering · Satellite Pollution · Space Industry
Professor Eloise Marais from University College London reveals that the burgeoning space industry, particularly launches by companies like SpaceX, is inadvertently conducting a geoengineering experiment by releasing black carbon particles into the upper atmosphere, which are now cooling Earth, albeit minimally, but with potential for significant future impact.
Rockets, primarily SpaceX's Falcon 9, emit black carbon (soot) into all atmospheric layers during ascent. Additionally, end-of-life satellites burn up, releasing more pollutants.
These particles, staying in the atmosphere for 2.5 to 3 years, block incoming solar rays, causing a cooling effect. While the current cooling is minimal compared to surface pollution, Professor Marais warns that the impact will rapidly increase if the space industry expands.
This accidental geoengineering raises concerns about unintended consequences, including ozone depletion and altered atmospheric circulation patterns, without the necessary ethical considerations. Governments currently lack a solid regulatory framework for responsible and sustainable space use, posing a significant challenge for international cooperation.
The rocket company might never accomplish everything it has told investors, but it has met the original goal of reigniting interest in space.
