The corona of black hole J1820+070, revealed by X-ray echoes mapped by NICER
The corona of black hole J1820+070, revealed by X-ray echoes mapped by NICER
![](https://www.nasa.gov/sites/default/files/thumbnails/image/black_hole.jpg?thumbnail=1024&format=webp)
I've been using this as my phone wallpaper for a while. Had to reverse image search to recall where it was from. It's found on this page: https://www.nasa.gov/mission_pages/station/research/station-science-101/astrophysics/
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