The sheer size of the universe is unfathomable. Even if you traveled at the speed of light, or 180,000 miles per second (or around the entire earth seven times a second), it would take nearly 100,000 years to travel across the Milky Way Galaxy. There are hundreds of billions of known galaxies in the universe. In theory, it would take nearly fifteen billion years to reach the end of the universe going at the speed of light. Realistically, this is not possible. It is not possible due to the fact that the universe is constantly expanding in all directions which may prevent you from ever reaching your destination at the end of the universe. How many more epochs shall the universe expand for? Maybe forever, though I doubt that to be the case. I feel that the universe will end similarly to how it began, not with a big bang, but a big crunch. The gravity pushing the galaxies and matter outward may reverse and pull them inward toward the center of the universe. All the matter could be condensed in a small, centralized area and could create a new big bang with a new universe containing totally new matter, elements, and laws of nature. A universe 2.0 so to speak. I wonder how many times this process may have occurred or if it has ever occurred. We may never know the answer but that is the beauty of science.
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