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Laniakea: Our home supercluster
About this video
A short Nature video on the discovery that our home supercluster is Laniakea, redefined by mapping the flow of galaxies rather than their density. It names the structure with a Hawaiian word meaning 'immeasurable heaven'.
Why it appears in the archive
Linked as a quick visual intro to Laniakea and large-scale cosmic structure.
AI-generated summary and labels from the source dataset; verify important details against the video. Source & credits.
From the Hacker News discussion
I like these two from the authors of the Laniakea super cluster paper in 2014 Nature: [VIDEO] Contributing Author: [LINK]
Read original comment ↗As well as what ISL said, if the universe is toroidial it seems like it's larger than our visible horizon. While images of an individual galaxy might be hard to tell if they are repeated, we can see enough of the structure of the universe that if our visible horizon was much larger than the real value of the universe and there was wrapping going on, we'd see it. This isn't the exact sort of video I'm looking for, but it's close enough to what I'm talking about: [VIDEO] Everywhere we look we see distinct structures. It is not a bad thought, though. It may well do some sort of wrapping around, just at a larger scale than we can see. It's an open problem.
Read original comment ↗There's also a short video on this: [VIDEO] Plus there's that scene from Stargate Universe: - Are those stars? - No, those are galaxies.
Read original comment ↗