Cassiopeia A 3-D Model: A Star from the Inside Out (video) Chandra X-ray Center Share Print E-Mail Loading video... Caption This visualization is a 3-D model constructed from data from Chandra, Spitzer and ground-based optical telescopes. Scientists determined the positions of the different telescopes, represented by the various colors, using the Doppler effect. That information was then put into a medical imaging program adapted for astronomical use before commercial software was used to create the final visualization. This is the first time such a multiwavelength 3-D model of a supernova remnant has been created. Credit NASA/CXC/MIT/T. Delaney et al. Usage Restrictions None 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.