Crater Images (IMAGE) Naval Research Laboratory Caption Figure 2 A crater in aluminum foil containing Wild 2 comet material. B. Scanning transmission electron micoscope image of an extracted slice of the crater. C. A Principal component map identifying the cometary material components: red = iron-nickel sulfide; blue= magnesium-silicate; yellow = aluminum foil capture medium; green = protective carbon coating. Credit 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.