From what I remember, according to the WMAP satellite images (microwave radiation, etc) the universe is ever expanding, growing colder and no new matter is being created (in our universe). Thus, our universe is doomed to die a cold death (and not gazillions of years, but in trillions ). However, there is the possibility of untold numbers of other universes. Several theories speak of a "multiverse." Some believe that these "verses" come into existence all the time ... like bubbles in a boiling pot of water.