The gradual increase in space missions brings with it not only countless benefits for mankind, but also several problems that cannot be ignored nowadays. The most relevant problem is the constant increase in space debris. These, also commonly called "space junk", include: non-functional satellites, mission remnants such as abandoned launch vehicle stages and fragments of various types, which orbit the earth and represent a real risk to new space missions. This issue has led space agencies to define different solutions to mitigate both the risk of orbital accidents and the increase of space debris, thus decreasing the probability of collisions. These solutions are: extending the operational life of satellites with a consequent reduction in the number of launches, design the satellite for end-of- life deorbiting, and the active removal of already orbiting debris.