What kills cosmos?

What kills cosmos?" This question gnaws at the depths of my curiosity, seeking answers that might unveil the secrets of the vast universe. Could it be the relentless devouring of black holes, swallowing everything in their path, leaving nothing but a void in their wake? Or perhaps it's the slow decay of stars, as they exhaust their nuclear fuel and fade into obscurity? Maybe it's the relentless expansion of the universe itself, stretching the fabric of space-time to the breaking point, tearing apart the delicate structures that hold the cosmos together. Or could it be something more subtle, like the gradual erosion of entropy, as the universe marches towards its inevitable heat death? Each of these possibilities seems to hold a piece of the puzzle, but the true answer remains elusive. As we delve deeper into the mysteries of the universe, perhaps we'll find clues that lead us to a better understanding of what ultimately kills the cosmos. Until then, this question remains a tantalizing mystery, begging for further exploration and understanding.