Cometary Dust Captured in Aerogel (IMAGE) University of Chicago Caption Microscopically magnified image of track 25, created by a particle from comet Wild 2 during its capture in aerogel, more informally known as "solid smoke." Four cometary particles are circled, including the ones designated Inti-B and Inti-C. Scientists had removed the larger Inti particle from the end of the track at right before the image was taken. The track measures less than a tenth of an inch long. Credit Image courtesy University of Washington Usage Restrictions This image may be reproduced by news organizations reporting research findings pertaining to NASA's Stardust mission to comet Wild 2. 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.