NASA's Chandra X-Ray Observatory just completed its 25th year of observations, and to celebrate, they've released 25 never-before-seen images of various celestial objects. X-rays are a sign of extremely hot and energetic places in the Universe, so these images show regions around active black holes, giant clouds of hot gas, and extreme magnetic fields. Enjoy them while you can, as NASA is still planning on shutting down the mission to save budget.
https://chandra.harvard.edu/press/24_releases/press_072224.html/