The potent pollution from so-called “megaconstellation” satellite systems launched en masse into space since 2019 will account for nearly half (42%) of the total climate impact of space sector pollution by the end of the decade, finds a new study led by UCL researchers. Publishing in Earth’s Future , the research team examined air pollution produced by the growing number of rocket launches, and the discarded rocket bodies and dead satellites falling back to Earth. The black carbon (soot)