XMM-Newton image of galaxy M33

This X-ray image, showing a mosaic of the spiral galaxy M33, was taken by the X-ray imaging cameras on board ESA's XMM-Newton in August 2000. The marked ellipse limits the area of the optical view of this galaxy. Thanks to XMM-Newton data and images like these, scientists around the world have produced 1000 papers so far, a major achievement for the mission.