Chandra Release - September 6, 2018 Visual Description: AM 0644-741 The ring galaxy AM 0644-741 is a fascinating celestial object shown in X-ray and optical light. The X-ray image captures the galaxy's intense activity, while the optical image reveals its intricate structure. In the X-ray image, the ring galaxy appears as bright, glowing purple sources against a darker background. In the optical data, the ring galaxy takes on a more classic galaxy appearance, showcasing its complex structure. The field of view consists of two galaxies, with a smaller elliptical galaxy in pale orange on the left and the larger looking ring galaxy on the right. The colors of the ring galaxy are predominantly blue and cream, with tiny pops of red for some of its stars. X-rays from NASA's Chandra X-ray Observatory (purple) have been combined with optical data from NASA's Hubble Space Telescope (red, green, and blue) to create this cosmic landscape. The Chandra data also reveal the presence of very bright X-ray sources, most likely binary systems powered by either a stellar-mass black hole or neutron star, in a remarkable ring.