Dimensions in space ✨️ We know three dimensions in space and the fourth in time or space-time by Einstein . 🌐TESSERACT is a mathematical extension of the concept of three-dimensional or 3D space, the concept of HYPERSPACE. We all know it from MARVEL Movies but now we would like to introduce you the concept . TESSERACT is the cube in fourth-dimensions. Tesseract can also be called as a HYPERCUBE in 4D.. a Hypercube is a n-dimentional cube. A cube has 6 faces where as a tesseract has 24 faces 2D