Carbon-rich Fragment (image) Arizona State University Share Print E-Mail Caption The carbon-rich fragment of the material comets are built from is colored red in this scanning electron microscope image. The scale bar shows its size. Credit Image credit: Larry Nittler, Carnegie Institution for Science Usage Restrictions No restrictions when used in connections with reportage on this story Share Print E-Mail 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.