Preparations for test flights ahead of the SABRE mission. The mission found particles in the stratosphere contaminated with elements used in the construction of spacecraft.
Scientists sampling the upper atmosphere have found metal elements in aerosol particles they say are from thousands of rocket boosters and satellites that have re-entered from space.The National Oceanic and Atmospheric Administration's SABRE mission found aerosol particles in the stratosphere contaminated with elements used in the construction of spacecraft.
When a satellite reaches the end of its design lifetime, it either falls out of orbit or is driven down into the atmosphere for disposal to prevent it from becoming a hazard in the near-Earth space environment. mission, using a specially equipped aircraft to sample the stratosphere. Researchers were looking for aerosols, which are tiny particles that form from chemical reactions taking place at high altitude.
Like the ocean, the atmosphere is vast. Historically, we have behaved as if our small contributions of pollution will have no effect. But just as we now see microplastics throughout the world's air, oceans and soils, our space garbage is accumulating.
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