X-ray Contours of NGC 4945 (IMAGE) NASA/Goddard Space Flight Center Caption This image shows spiral galaxy NGC 4945 in X-rays. The contours represent the iron K-alpha line observed by the XMM-Newton's EPIC instrument. Brighter colors indicate greater concentrations of X-rays. Credit Weaver et al. 2024, ESA/XMM-Newton Usage Restrictions No restrictions. License Public Domain 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.