Foil Cavity from Interstellar Dust Impact (IMAGE) University of California - Berkeley Caption A top-down scanning electron microscope view of one of the interstellar dust impacts (1061N,3). The crater is about 280 nanometers across. The dust particle residue is visible as the 'bumpy' terrain inside the crater. Credit Rhonda Stroud, Naval Research Laboratory 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.