Micrograph of Sorok Picokeystone (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption The bulbous impact from the vaporized dust particle called Sorok can barely be seen as the thin black line in this section of aerogel in the upper right corner. Credit Westphal et al. 2014, <i>Science</i>/AAAS 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.