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What kind of systems or technology is developed for ISS (International Space Station)? There are so many debris at higher orbits than ISS, but many of them has started deorbiting so we have a potential risk that some debris could collide with ISS. Illustrating even with examples is ok, such as different damages suffered before by the ISS and which technology served as protection or solution for these sittuations. Another element that has to do with safety is the evacuating process how fast could be done that?