I see, hear, and read about black holes and their consumption power often. They grow as they consume. Eventually, as they keep growing and consuming, wouldn’t they combine and continue the process until they become so large as to devour everything in existence?
In: Physics
There are two ways we think the universe could end. The first is the Big Crunch. The idea is there’s enough mass in the universe that gravity begins to dominate, and start pulling everything back together. The universe starts contracting, and eventually everything is crushed down into a single point, called a singularity. This is probably the closest to what you’re thinking of.
The other way, which is what we think is probably going to happen, is that there’s not enough mass in the universe for gravity to dominate. Instead, the universe just keeps expanding forever. Eventually, after trillions of years, all the stars burn out, all the energy is spent, all the black holes evaporate into nothing. The universe is dead and dark and nothing ever happens any more. Time becomes meaningless because nothing moves, so nothing can measure time passing. That’s the Heat Death of the universe.
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