Black holes, as far as we know, will evaporate through Hawking radiation, with one of two identical, quantum-entangled particles floating into space and the other staying behind. Other objects will evaporate in a process similar to Hawking radiation, with the densest disappearing the fastest. While the universe might have started with a bang, it probably won’t go out with one. This called Hawking radiation. Related Story Do Black Holes Die?