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is The Universe Flat?

What is the true shape of the universe? Is it curved like a sphere, stretched like a saddle, or flat like an endless sheet? In this video, we will explore the three leading models of the universe’s geometry—closed, open, and flat—with real-world physicists behind each idea, including Albert Einstein, J. Richard Gott, and George Efstathiou. But we’re not stopping there. We’ll journey into the mysterious and mind-bending No Boundary Proposal by Stephen Hawking and James Hartle, a theory that suggests the universe may have no beginning, no edge, and no boundary at all. Plus: Why the universe looks flat How cosmic inflation ties into all this Whether you're a science nerd or just cosmically curious, this 6-minute ride will stretch your brain across time and space—literally. Watch now and see if you can wrap your head around the shape of the entire universe. --- Timestamps: 0:00 Intro 0:25 What does it for the universe to have a shape 0:52 The Three Possibilities 1:00 Closed Universe (Einstein’s Model) 1:30 Open Universe (Hyperbolic Geometry) 1:58 Flat Universe (Modern Observations) 2:29 Why Flat Ubiverse is the Best Guess? 3:11 Cosmic Inflation 4:33 Toroidal Universe ( a Cosmic Donut) 5:01 Hawking’s No Boundary Proposal 5:43 What is The Shape of The Universe? --- Hashtags: #Physics #Cosmology #BigBang #StephenHawking #InflationTheory #ShapeOfTheUniverse #Space #ScienceExplained #FlatUniverse #QuantumCosmos