Are There Hidden Dimensions? The Universe's Invisible Directions

What if our universe has more than three dimensions? From Kaluza's 1919 five-dimensional theory to string theory's hidden Calabi-Yau shapes and the Randall-Sundrum brane world, this documentary hunts for the universe's invisible directions — and follows the real experiments (LHC Run 3, Eot-Wash torsion tests, LIGO) that searched for them and came back empty. Are extra dimensions real, or is 3+1 all there is? Chapters: 0:00 A Universe of Hidden Directions 2:45 Kaluza's Fifth Dimension 6:30 The Brane We Live On 10:15 Hunting for Extra Dimensions 14:00 Why We Still See Only Three 17:30 What a Fifth Dimension Would Change 20:30 The Hunt Continues #spacedocumentary #dimensions #physics