ESA's MASTER software tool

ESA maintains and distributes a number of models for the characterisation of the space debris environment and its future evolution. The Agency's most prominent debris and meteoroid risk assessment tool is called MASTER (Meteoroid and Space Debris Terrestrial Environment Reference). It covers a size regime for debris and micrometeoroids between 1 micrometer and 100 m. The MASTER software can be accessed free of charge via the Space Debris User Portal.