Planetary Science Archive

The Planetary Science Archive is the central repository for all scientific and engineering data returned by the European Space Agency's Solar System missions, such as Giotto, Huygens, Mars Express, Rosetta, SMART-1, and Venus Express, as well as several ground-based cometary observations. It uses NASA's Planetary Data System standards as a baseline for the formatting and structure of all data contained within the archive.

Source: Wikipedia — Planetary Science Archive (CC BY-SA 4.0)