[olvy0]

Yeah, see here for example [0]:

Regarding the "worm" in the Sun being a black hole, I don't think the Prophet's description in Dr Talos's play (Claw, ch. XXIV) leaves much doubt: "Yet even you must know that cancer eats the heart of the old sun. At its center, matter falls in upon itelf, as though there were a pit without bottom, whose top surrounds it." He also says of it: "We know it to be far more, for it is a discontinuity in our universe, a rent in its fabric bound by no law we know. From it nothing comes - all enters in, nought escapes."

[0] https://en.wikipedia.org/wiki/Talk%3AThe_Book_of_the_New_Sun