(IMAGE) Goethe University Frankfurt Caption The samples analyzed in the transmission electron microscope of the Schwiete Cosmo Lab at Goethe University are barely visible. Arrows indicate three of the samples. Credit Photo without arrows: NASA Usage Restrictions To be used only when reporting on OSIRIS REx or Goethe University Frankfurt, Germany. Give credit to: NASA License Original 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.