Donald Brownlee, University of Washington (IMAGE) University of Washington Caption University of Washington astronomer Donald Brownlee examines a particle from comet Wild 2 using an electron microscope. Brownlee is principal investigator for the Stardust mission, which captured material from Wild 2 and then returned to Earth in January 2006. Credit Mary Levin/University of Washington Usage Restrictions None License Licensed content 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.