Blue Quasar (image) Durham University Share Print E-Mail Caption An unobscured quasar with signatures of evolved jets and less extreme winds that ultimately shut down star formation. Credit S. Munro. Usage Restrictions Image to be used with this research story only. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.