Other than my wife’s bum … Is that the biggest single “thing” in existence?
Obviously our own Sun is minuscule in comparison to that SMBH… but how do the largest stars compare? Are they still really really really small sat next to that?
Ro5ey, that’s a damned good question, actually. It’s swallowed many, many stars and other debris, but I guess it has to be classed as a single ‘object. Trouble is, many galaxies appear to have black holes at their core, but who knows how big the damned things can actually get? A really old one could quite possibly have consumed it’s entire parent galaxy, thus having a mass of tens of millions of stars, and a radius of a large solar system, or bigger, possibly, but with nothing left for it to swallow, there wouldn’t be any x-radiation emitted at the Swartzchild radius to give the game away, only gravitational lensing when another stellar object passes behind it. The biggest stars are vast, the largest known is VY Canis Majoris:
http://en.wikipedia.org/wiki/VY_Canis_Majoris
Houns, another good question; I guess it’s the event horizon, but, really, who the hell knows! 😆
Unlike some people, I find this sort of thing endlessly fascinating, and hardly boring.
Discussing the results of some game of Wendyball, on the other hand, has me wanting to open a vein…