Aoki Vela Film (IMAGE) Kobe University Caption A section of the emulsion film after development. The traces of the particles produced by gamma ray impacts can be seen as tiny greyish dots throughout the plane. Credit GRAINE collaboration Usage Restrictions Credit must be given to the creator. License CC BY 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.