  The ESO Science Archive is the collection and access point of the data
generated at ESO's La Silla Paranal Observatory, both raw and processed. It is
a major contributor to ESO's science output, being used in about 4 out of 10
refereed articles with ESO data. In this paper, which is presented on behalf of
the operations and development teams, we review its contents, policies, us
interfaces and impact.
