Mrs Trellis
Well-known member
.......since black holes are of interest to cavers.
![www.bbc.co.uk](https://ichef.bbci.co.uk/news/1024/branded_news/105D5/production/_132692076_eso2402a.jpg)
Brightest and hungriest black hole ever detected
Astronomers report an object that shines with a brightness equivalent to 500 trillion suns.
www.bbc.co.uk