Black holes can die through a process known as Hawking radiation, named after the physicist Stephen Hawking. According to this theory, black holes emit particles over time due to quantum mechanical effects near the event horizon, the point of no return beyond which nothing can escape the black hole's gravity. As a result, black holes gradually lose mass and energy until they eventually evaporate completely. However, this process takes an extremely long time, especially for larger black holes, which can take trillions of years to evaporate.

As for stopping a black hole, aside from merging it with another larger black hole, there is currently no known way to stop a black hole's gravitational pull once it has formed. Even if a massive object were to approach a black hole, it would be pulled in by the black hole's strong gravity, and there would be no escape. However, it is worth noting that the gravitational pull of a black hole weakens as you move away from it, just like any other massive object. So, as long as you are not too close to a black hole, you could theoretically escape its pull with sufficient velocity. But once you cross the event horizon, there is no turning back.
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