Calabi-Yau Manifold Crystal, A Cross-Section of the Calabi-Yau QuinticHidden deep inside the dimensions of string theory are the microscopic Calabi-Yau spaces.According to string theory, space-time is not four-dimensional as you might expect, but actually 10-dimensional. The extra six dimensions are believed to be compactified or rolled up into such a small space that they are unobservable at human scales of sight. Their size and six dimensions make Calabi-Yau spaces difficult to draw. But, this model shows a three-dimensional cross-section of this likely space to reveal its structure and shape.