The European Space Agency (ESA) is a joint organization across 22 countries focusing on the exploration of earth as the main goal. The long term data preservation progamme was announced in the 2000s to ensure that more than 30 years of valuable data that ESA has provided to organizations across the world would still be accessible.

The data being deposited is a collection of earth observation (EO) data with historical data from missions like the ENVISAT and GOCE program. Satellite images from the these missions are focusing of the exploration and understanding of the earth. Further, there is also information from science missions, like Giotto, ISO and EXOSAT which more contains valuable data regarding other planets, comets, asteroids and other objects in the space.

Read more about European Space Agency (ESA):

https://esa.int/