The Boundary of Forever Explained — Narrated by David Attenborough

The Boundary of Forever Explained — Narrated by David Attenborough | Science Documentary 2025 ► Subscribe Now: @asdtheexplainer Where does time end? Where does the universe stop? And is there a final frontier beyond which nothing — not even eternity — can reach? In this documentary, narrated by Sir David Attenborough, we journey to the most remote limits of physics: the mysterious boundary of forever. A place where the expansion of the universe outpaces the speed of light… Where galaxies vanish beyond our reach… And where the fabric of spacetime stretches into an endless, unreachable horizon. We explore the cosmic event horizon, the ultimate wall of causality that separates what we can ever know from what will remain forever hidden. Is the boundary of forever a real edge of the universe? Is it a limit imposed by the laws of relativity? Or is it an illusion — created by our own position in an expanding cosmos? From the accelerating expansion driven by dark energy… To the horizons of black holes… To the distant future where galaxies fade one by one into eternal night… This film uncovers how the universe creates boundaries not of matter, but of information, light, and time itself. Join us as we travel to the last line of sight… To the fading edge of existence… To the silent frontier known as the boundary of forever. 🎵 Music credits: Lost Frontier by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 license. https://creativecommons.org/licenses/... Source: http://incompetech.com/music/royalty-... Artist: http://incompetech.com/ 💼 Let’s work together: For business inquiries, collaborations, or copyright matters, contact: [email protected]