European and Russian specialists recently worked together to catch signals from an astrophysical observatory mission, now mapping X-ray sources in our galaxy and beyond, discovering previously unknown supermassive black holes.
![](https://scx1.b-cdn.net/csz/news/tmb/2020/esalistensin.jpg)
Source:
https://phys.org/news/2020-06-esa-black-hole-mission.html