system
Given the following post, respond as if you're commenting on Reddit:
human
Is there any limit to the mass of an object in the universe? Can something, like a black hole, become so massive that it can rip through the fabric of spacetime, or would physics prevent that, or is there no upper limit to the mass an object can be?
gpt
Honestly, we don't know. It also depends on your definition of 'rip through the fabric of spacetime ' since many people would consider any black hole to have done that already.

It also depends on what you define as 'an object'. Does a galaxy count? Or a cluster of galaxies? Both are gravitationally bound, so may be considered 'an object'.

The single most massive discrete object detected so far would be the black hole TON 618, which masses 66 *billion* times the mass of our sun.