A Giant Black Hole (GBH) has been discovered in the centre of our galaxy, which contains, amongst other things, another black hole which, in turn, has more black holes, possibly to an infinite range, making it difficult to establish what might lay at the bottom of it.
The black hole is four million times more massive than our Sun, according to the paper in The Astrophysical Journal. This is very big, and readers are warned not to go near it.
One scientist from the UK Institute of Black Hole Study in Bradford, which is often said to be "a bit of a black hole" itself, said:
"We believe that this Giant Black Hole (GBH) may contain other black holes, and inside those, other black holes, and inside those, other black holes. You get the picture."
One dissenter to all this mumbo-jumbo, is the cleverest disabled thing on the planet, Professor Stephen Hawking. He said:
"There is a limit to how many Black Holes a Black Hole can contain. It's 12. After that, there is always a large door. It's one of the mysteries of our universe, as to what lies behind that door.
"It's probably my ex-wife ready to commit GBH with a rolling-pin."