Скачать или смотреть Why Can We Never Go Beyond the Universe?

Edge of the universe, observable universe, and cosmic event horizon — where does space end, and can we ever escape it? In this video, we explain cosmic expansion, why the observable universe is ~46 billion light-years across, what the Hubble radius is, and how dark energy creates a true cosmological event horizon.

Imagine a perfect starship flying near light speed, leaving the Solar System and our galaxy behind — and still never hitting a “wall.” We unpack three key horizons:

Particle (observable) horizon — the informational limit of what we can see.

Hubble radius — where recession speed equals the speed of light; beyond it, space itself carries galaxies away faster than light.

Cosmological event horizon — the real limit of reachability: regions today ≳16 billion light-years away can never send us signals we’ll receive.

You’ll also learn why the universe doesn’t expand “into” anything, how space can be finite yet unbounded (like Earth’s surface), and why “escaping” the universe is a category error — we are part of spacetime itself. The only meaningful “edge” is the moving boundary of what we can observe and influence.

If you enjoy clear, no-nonsense cosmology, like the video and subscribe — it really helps the channel grow. Drop your questions and ideas for future episodes in the comments!