The vast universe is mysterious and unpredictable. 'Who am I? Where do I come from? Where am I going?' This is the ultimate proposition of human philosophy put forward by the great ancient Greek thinker and philosopher Plato. For thousands of years, people have been constantly questioning Searching for answers, but still unable to give them. The universe we live in is itself a macroscopic 'life body', and all things and civilizations here are born from its ideas and structures. This is the 'original universe' in which we live. The solar system is just a tiny cell in the 'universe', although the radius from its outer Oort cloud to the central sun is 1 light-year away. Within the envelope of the Oort cloud, everything is
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Light Years BoundaryChapter Contents