The Unified Astronomy Thesaurus (UAT) is an open, interoperable and community-supported
thesaurus which unifies existing, divergent, and isolated controlled vocabularies
in astronomy and astrophysics into a single high-quality, freely-available open thesaurus
formalizing astronomical concepts and their inter-relationships. The UAT builds upon
the IAU Thesaurus with major contributions from the Astronomy portions of the thesauri
developed by the Institute of Physics Publishing and the American Institute of Physics.
The Unified Astronomy Thesaurus will be further enhanced and updated through a collaborative
effort involving broad community participation.