Trans-Neptunian Objects Surface Composition (IMAGE) University of Central Florida Caption Artistic representation of the distribution of trans-Neptunian objects in the planetesimal disk, with overlaid representative spectra of each compositional group highlighting the dominant molecules on their surfaces. Credit: Graphic art by William D. González Sierra for the Florida Space Institute, University of Central Florida Credit Graphic art by William D. González Sierra for the Florida Space Institute, University of Central Florida Usage Restrictions For use with coverage of trans-Neptunian objects research and credit must be given to: William D. González Sierra for the Florida Space Institute, University of Central Florida License Original 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.