Modern science replaces monsters with abstract boundaries that define the limits of human knowledge.
: The "edge" of our universe is not a physical wall but a limit of information. Because light takes time to travel, we can only see objects within a bubble roughly 93 billion light-years in diameter. Space Legends At the Edge of the Universe
: Einstein’s theory of general relativity suggests that if the universe has "positive curvature," it could be finite but without an edge—much like the surface of a sphere where you can travel forever without hitting a boundary. 3. Modern Cultural Interpretations : Einstein’s theory of general relativity suggests that
Throughout history, civilizations have populated the perceived "edges" of the world with legends and monsters. : As early as the 7th century BC,
: As early as the 7th century BC, the Babylonians mapped the world as a disc surrounded by "bitter waters," beyond which lay seven mystical lands. These regions were described as the place "where the winged bird ends not his flight".
