Scientists find oldest-known black hole in the universe: 'This is about as far back as you can practically go'

https://www.space.com/astronomy/black-holes/scientists-find-oldest-known-black-hole-in-the-universe-this-is-about-as-far-back-as-you-can-practically-go
Sharmila Kuthunur
Space
August 8, 2025