Our XMM-Newton has observed comet 3I/ATLAS in X-ray light! When gas molecules streaming from a comet collide with the solar wind they produce X-rays, seen here as the red glow of 3I/ATLAS 👉 www.esa.int/ESA_Multimed... Blue marks empty space with little X-rays. The black line is a detector gap 🔭 🧪