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Why Most of the Universe Is Permanently Unreachable

Kurzgesagt – In a Nutshell · Explainer · YouTube title: TRUE Limits Of Humanity – The Final Border We Will Never Cross
Why it's here

Cited in cosmology threads as an accessible visual explanation of the unreachable universe and its expansion limits.

What it covers

Kurzgesagt explains why, even with science-fiction technology, most of the universe is permanently out of reach because of cosmic expansion and finite resources.