Electron Microscope (IMAGE) University of Arizona Caption The study's lead author, Pierre Haenecour, is pictured here with one of the ultra-high-resolution electron microscopes used to obtain chemical and microstructural information about the stardust grain. Credit University of Arizona/Maria Schuchardt Usage Restrictions This visual may only be used in conjunction with reporting on or posting of this news release. Credit must be given as indicated. 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.