Space Ecology: From Earth to Moon and Mars

The recent entry of private entrepreneurs into the world of space has multiplied the number of services provided by instruments in orbit, resulting into a rapid and tumultuous growth of the space economy. More services translate into more launches bringing into orbit more satellites. As a result, circum-terrestrial orbits are filling up alarmingly, and we are only at the beginning of the proliferation of mega constellations that have sprung up in recent years to provide planet-wide Internet...