Do you know about the 4th dimension? Have you ever heard of a tesseract? In this short video Carl Sagan provides an informative and easy to understand perspective on the 4th dimension and how it exists beyond human perception. The tesseract is the four-dimensional analogue of the cube; the tesseract is to the cube as the cube is to the square. Please let us know what you think! #MINDS #ART #NEWS #JOURNALISM #SCIENCE https://www.youtube.com/watch?v=N0WjV6MmCyM