STScI . The Orion Nebula Cluster . as a Paradigm of Star Formation . ... HST . ... As the nearest young cluster dominated by massive OB stars, the Orion Nebula Cluster plays a paradigmatic role in our understanding of star and planet formation. ... Emphasis will be given to the role played by the Orion Nebula Cluster as a paradigm for the early solar environment, as well as for present-day star formation in different environments, including the Galactic center and the Magellanic Clouds. ...