Space-time is a fundamental concept in modern physics, central to Einstein’s theory of relativity. It combines the three dimensions of space with the one dimension of time into a four-dimensional continuum. This unified model helps explain how gravity works and how objects move through the universe. In relativity, space and time are not separate entities but are interwoven into a single fabric. Massive objects, like stars and planets, cause this fabric to curve, and this curvature is what we per

Learn how to visualize four-dimensional shapes, and see a massive, real-life “hypercube”: http://curiosity.im/4DimensionalShapes | Curiosity