Chandra X-ray Observatory | Quick Look: Galaxies Go on a Deep Dive and Leave Fiery Tail Behind @ChandraXray | Uploaded 1 year ago | Updated 2 hours ago
The longest tail of hot gas stretching behind a group of galaxies has been confirmed.

NGC 4839 is plunging in the Coma Cluster, leaving an X-ray wake as it goes.

This tail contains superheated gas that has been stripped as NGC 4839 dives in.

NASAs Chandra X-ray Observatory shows the tail is about 1.5 million light-years long.

More at: https://chandra.si.edu/photo/2023/ngc4839/