The Odin mission was jointly developed by space agencies and organisations in Canada, Finland, France, and Sweden. Launched in 2001, with an expected lifetime of 2 years, it is still collecting data on Earth's atmosphere over 20 years later.

Odin is part of ESA's Third Party Missions programme, in which ESA has an agreement to promote the availability of data collections for research and applications development.

Learn about Odin in our new infographic: