Where does it begin/end?

One of the ancient questions is: is the universe finite? Many scientists advocated the fact that it wasn't and many others said it was. The widely accepted theory is that the universe is finite, but its boundaries cannot be seen. This means if you start travelling from a point near the Earth, then at some point you will end up at the same point(as if the universe is an enclosed space). A famous postulate called Olbers' paradox states that if the universe was infinite, then all the stars and galaxies would be distributed throughout the sky in an even manner. Because of this, the night sky would also glow bright due to the starlight. Since this is obviously not the case, the universe must end somewhere. New galaxies being discovered at points further and further away from our wildest imaginations again disprove this. Some conjectures say not only is the universe finite, but is shaped like a dodecahedron( a complex 3D Platonic solid), which means you will end up at a point which is a mirror image of another similar point. Who knows which one of these crazy theories is true? Physical experimentation may take hundreds of years as we have neither the resources nor the technology to undertake such a task, even though this task would answer countless questions in astronomy and physics.