I.e. Was there a universe before the bigbang? Well, i guess so. Hence, there must be an infinite cycle of universe: -∞, collapsing, expanding, collapsing, +∞, etc. Now, During the course of the universe's life, it must have released some energy into the void beyond. Hence, over time its losing energy. Using E=mc^2, we can say the universe is losing its mass. Hence, after some universe lives, the universe might have so less energy, that it will fail to expand again. Hence, the existence finally shrunk to an unfortunate point. Any arguments to this?