Spiral Galaxy Tracings (IMAGE) North Carolina Museum of Natural Sciences Caption This image shows the sum of 15 independent tracings of the spiral structure of the same galaxy displayed using a violet to red rainbow color map. The violet areas indicate no agreement and the red areas indicate greatest agreement between tracings. Credit Ian Hewitt 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.