The European Space Agency (ESA) is Europe’s gateway to space. Its mission is to shape the development of Europe’s space capability and ensure that investment in space continues to deliver benefits to the citizens of Europe and the world.
Find out more about space activities in our 23 Member States, and understand how ESA works together with their national agencies, institutions and organisations.
Exploring our Solar System and unlocking the secrets of the Universe
Go to topicProtecting life and infrastructure on Earth and in orbit
Go to topicUsing space to benefit citizens and meet future challenges on Earth
Go to topicMaking space accessible and developing the technologies for the future
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ESA maintains and distributes a number of models for the characterisation of the space-debris environment and its evolution. The Agency’s most prominent debris and meteoroid risk assessment tool is MASTER (Meteoroid and Space Debris Terrestrial Environment Reference).
It covers a size regime for debris and micrometeoroids between 0.001 mm and 100 m. The MASTER software can be accessed free of charge via the Space Debris User Portal.