This burst of color shows a fascinating discovery: a galaxy cluster acting as a cosmic furnace. The cluster is heating the material within to hundreds of millions of degrees Celsius—well over 25 times hotter than the core of the sun.
![](https://scx1.b-cdn.net/csz/news/tmb/2020/cosmicfurnac.jpg)
Source:
https://phys.org/news/2020-11-cosmic-furnace-x-ray-observatory.html