The Tesseract

A tesseract, also known as a hypercube, is a four-dimensional geometric shape, analogous to a cube in three dimensions. Just as a cube is made of six square faces, a tesseract consists of eight cubic "faces." While we live in a three-dimensional world and can't visualize four dimensions directly, we can understand a tesseract through its projections or shadows in three-dimensional space. It’s often used in mathematics and physics to explore concepts of higher dimensions and has also gained popularity in science fiction, symbolizing complex ideas beyond our everyday experiences.