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TRUE Limits Of Humanity – The Final Border We Will Never Cross

Kurzgesagt – In a Nutshell · 23.6M views · 2021-05-11 · 11:41

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Overview

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

On Hacker News

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

Recommended by 3 HN people across 2 months · HN mentions 2021–2024

Topics

Cosmology & astrophysicsSpace exploration & spaceflight
Search by tags
cosmic expansionobservable universekurzgesagtcosmologyspace travel

What people said

dcwardell · 2022-11 · Recommendation

I always appreciate content like this which is easy to digest but still inspires awe in the universe around us. Scrolling around the map and looking further and further back in time reminded me of this Kurzgesagt video [0]. It's crazy to think how much of the universe is lost to and unreachable by us. Kurzgesagt has a lot of great content (even if it's a bit cartoonish). I'm sure they get things wrong, but I feel like they make an effort to research the topic first. [0] [VIDEO]

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kibwen · 2021-09 · Recommendation

This is forgetting to account for the accelerating expansion of the universe. Even if one were to depart from Earth today, traveling at light speed, 94% of the observable universe is already impossible to reach. See this excellent video for more detail: [VIDEO]

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unyttigfjelltol · 2021-09 · Recommendation

I've been enjoying the kurzgesagt collection of videos[1] which discusses the same phenomena, and how we literally can never travel to large swaths of the universe. [1] [VIDEO]

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Sources

Video by Kurzgesagt – In a Nutshell, played through YouTube.

Data and selection notes

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HN Library: HackerTube export (2026-10-31) and open-index/hacker-news. Upstream summaries and classifications may contain AI errors.

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