#cosmic-web — Public Fediverse posts

Large-scale Structure in COSMOS-Web - Tracing Galaxy Evolution in the #CosmicWeb up to z ∼ 7 with the Largest JWST Survey: https://iopscience.iop.org/article/10.3847/1538-4357/ae5bac -> Astronomers produce most detailed map of the cosmic web: https://news.ucr.edu/articles/2026/05/11/astronomers-produce-most-detailed-map-cosmic-web

A DESI Milestone

Yesterday the Open Journal of Astrophysics published a paper by Porredon et al which will feature in the usual Saturday round-up. That paper, which is based on the First Data Release from the Dark Energy Spectroscopic Instrument (DESI) reminded me that I should mention that DESI recently reached an amazing milestone – it has now mapped the positions and redshifts of 47 million galaxies and quasars! There is a full press-release about this achievement here.

Here’s a little video showing how the survey works:

https://www.youtube.com/watch?v=6H3diAK_KIc

There are more videos and other graphics in the press release.

Here’s a nice picture showing a thin slice through the full survey that reveals the characteristic “cosmic web” of the large-scale structure of the Universe in all its glory:

This progress is great, but it really makes me feel old. Forty years ago, in 1986, I had just started my PhD. The state-of-the-art galaxy redshift survey slice then is shown in this plot, from de Lapparent et al 1986 (ApJLett 302, L1), one of the first papers I read as a research student (I got it in 1985 as a preprint), which contains just 1,100 galaxies:

It is worth mentioning that although DESI has now covered its original target area, it will continue until 2028. You can never have too many galaxy redshifts!

Large-scale structure of the Universe: from galaxies to cosmology

30 August - 3 September 2027, Tartu, Estonia

https://excosm2027.ut.ee/

#Universe #Cosmology #galaxies #CosmicWeb #conference #Tartu #Estonia #Astronomy #Astrophysics #Astrodon #science #news

Meet MOTHRA, the thousand-eyed telescope in search of the cosmic web - The Globe and Mail https://www.theglobeandmail.com/canada/science/article-meet-mothra-the-thousand-eyed-telescope-in-search-of-the-cosmic-web/

Gift link:

https://www.theglobeandmail.com/gift/3c21efbc9cacbbba32550fe0f9b78d3274a69347c3b3e4bab06105b7494d9890/OPWXUWK6XJHZFD6LQXKQ7QR7U4/

#astronomy #cosmicweb #darkmatter #telescope

On the cover of the new issue of Nature Astronomy: Elongated galaxies point to warm dark matter

Image: Álvaro Pozo, Donostia International Physics Center. Cover design: Bethany Vukomanovic

https://www.nature.com/natastron/volumes/10/issues/2

#Cosmology #galaxies #DarkMatter #physics #science #astrodon #nature #astronomy #news #astrophysics #simulation #cosmicweb

The #CosmicWeb is made up of large #voids delimited by long filaments of #matter at the intersection of which vast #gravitational structures are formed: #galaxies grouped into clusters.

Do their properties (mass, shape, star formation rate) preserve traces of the large-scale cosmic flows from which they originated? Find out this Thursday with Katarina Kraljic, a researcher at the @ObsStrasbourg , who studied a sample of observed and virtual galaxies : https://www.irap.omp.eu/event/the-co-evolution-of-galaxies-and-the-cosmic-web-over-cosmic-time/

"Structures cosmiques : une famille de géantes"

I was yesterday on France Culture to talk about the discovery of the Quipu Supercluster and other large scale structures.

https://radiofrance.fr/franceculture/podcasts/la-science-cqfd/structures-cosmiques-une-famille-de-geantes-6106604

#Cosmology #Cosmography #Quipu #QuipuSupercluster #Laniakea #LaniakeaSupercluster #SouthPoleWall #SloanGreatWall #CosmicWeb #science #astrophysics #astronomy #astrodon #radio #podcast #FranceCulture #Radiofrance

in the #arXiv

Dissecting the Perseus-Pisces supercluster observed with CFHT-MegaCam: Investigating environmental effects on galaxy morphology

by Maëlie Mondelin and co-authors
https://arxiv.org/abs/2511.05925

#galaxies #cosmicweb #PerseusPisces #supercluster #astronomy #astrophysics #astrodon #science #CFHT #Megacam #cosmology

in the #arXiv

Numerical Cosmology

by Romain Teyssier
https://arxiv.org/abs/2510.13129

#Cosmology #Astronomy #Astrophysics #Astrodon #DarkMatter #CosmicWeb #galaxies #science

Astronomers used background X-rays to study the “cosmic web” of gas between galaxies and discovered that cosmic filaments are spinning, challenging our understanding of the universe’s evolution. This breakthrough by MPE_Garching researchers explains how galaxies acquire angular momentum. Science continues to reveal our amazing universe!

@goodnews

#Astronomy #CosmicWeb #UniverseEvolution #GoodNews
https://scitechdaily.com/cosmic-ct-scan-uncovers-a-surprising-twist-in-the-universes-evolution/

The cover of the new issue of the Nature Astronomy journal, featuring a simulation of the Cosmic Web

Credits: Alejandro Benitez Llambay, University of Milano-Bicocca; created with Py-SPHViewer 2 software. Cover design: Bethany Vukomanovic.

https://www.nature.com/natastron/volumes/9/issues/4

#Cosmology #CosmicWeb

[Zoom on the #CosmicWeb] Have you dived into the deep fields of #Euclid revealed this Wednesday by the @ec_euclid ? Have you navigated between the thousands of #galaxies of different shapes, sizes, colors and masses? So many objects, near and far, fill our #Universe! https://sky.esa.int/esasky/?hide_welcome=true&hide_banner_info=true&hips=DES-DR2+ColorIRG&sci=false&layout=esasky&euclid_image=EDFS

What if their spatial distribution could tell us something about two mysterious components : #DarkMatter and #DarkEnergy? This is the gamble taken by the scientists involved in the Euclid mission. To do so, they've designed some unrivalled #instruments: a camera with great depth of field and high resolution records the variety of shapes and spatial distribution of galaxies, while a #spectrometer coupled with a #photometer can determine the distances and masses of galaxies ...

Alain Blanchard, professor at the University of Toulouse and researcher at IRAP, comments on the consortium's first-ever publication of scientific data: https://www.irap.omp.eu/en/2025/03/euclid-telescope-reports-first-results/

Check this out: this a tactile model of the Cosmic Web, produced by Amelia Ortiz Gil, Vicent Martinez and team as part of their project: Tactile 3D models for research and outreach in astronomy.

The model used is the Cosmic V-Web inferred from Cosmicflows-2:
https://doi.org/10.3847/1538-4357/aa7f78

#cosmology #scicomm #cosmography #cosmicweb #astronomy #astrophysics #astrodon #science #STEM #outreach

🔭 First direct image of the cosmic web: Turns out, the universe has been knitting a 3-million-light-year scarf. #CosmicWeb #UniverseUnveiled https://scitechdaily.com/first-direct-image-of-the-cosmic-web-reveals-the-universes-hidden-highways/

🚀 Just when we thought we had the universe mapped out, a 3-million-light-year filament says, 'Hold my telescope.' 🌀 #CosmicWeb #SpaceMysteries https://scitechdaily.com/first-direct-image-of-the-cosmic-web-reveals-the-universes-hidden-highways/

A map of the structure surrounding the Local Void

In this map our Milky Way galaxy lies at the origin of the red-green-blue orientation arrows, each 200 million lightyears in length.

☑️ this is Fig.1 of https://ui.adsabs.harvard.edu/abs/2019ApJ...880...24T/abstract
☑️ more insights by APOD: https://apod.nasa.gov/apod/ap190806.html

#Cosmology #Cosmography #LocalVoid #APOD #GreatAttractor #map #astronomy #astrophysics #astrodon #science #STEM #MilkyWay #galaxy #galaxies #CosmicWeb

Cosmography archives

2005: Discovery of the Sloan Great Wall

by J. Richard Gott and co-authors
https://doi.org/10.1086/428890

At the time of its discovery, this 1.37 billion light-years long filament is the largest observed structure in the Universe.

#Cosmology #galaxies #SloanGreatWall #Cosmography #archives #archive #CosmographyArchives #history #science #HistoryOfScience #Astrodon #astrophysics #astronomy #physics #STEM #Universe #CosmicWeb

The Universe and Laniakea

by Kurzgesagt
https://shop-eu.kurzgesagt.org/products/universe-infographic-poster

#Cosmology #Universe #galaxies #Astrodon #science #Laniakea #LaniakeaSupercluster #Kurzgesagt #scicomm #CosmicWeb

A probabilistic new map of the universe surrounding the Milky Way reveals that our galaxy is likely part of an even larger "basin of attraction" than we previously assumed

https://www.livescience.com/space/cosmology/the-milky-way-could-be-part-of-a-much-larger-cosmic-neighborhood-than-we-realized-challenging-our-understanding-of-the-universe

#Cosmography #Cosmology #galaxies #MilkyWay #Galaxy #universe #Astronomy #Astrophysics #Astrodon #science #STEM #map #maps #cartography #CosmicWeb #Shapley #SloanGreatWall #BoA #BasinsOfAttraction #EndOfGreatness

Get ready to feel cosmically insignificant.
https://popularmechanics.com/space/deep-space/a62546378/shapley-basin-of-attraction/

#Cosmos #Cosmology #galaxies #Laniakea #supercluster #Cosmography #universe #Astronomy #Astrophysics #Astrodon #science #STEM #map #maps #cartography #CosmicWeb #Shapley #SloanGreatWall #BoA #BasinsOfAttraction #popmech #popularmechanics #popular #mechanics

Milky Way galaxy is part of something huge

Check out the new video produced by Anton Petrov a.k.a #WhatDaMath on our recent #NatureAstronomy paper

https://youtu.be/knxQ4Akfxy4

#Cosmography #Cosmology #galaxies #MilkyWay #Galaxy #universe #Astronomy #Astrophysics #Astrodon #science #STEM #map #maps #cartography #CosmicWeb #Shapley #SloanGreatWall #BoA #BasinsOfAttraction #EndOfGreatness #Youtube #youtuber #video #scicomm

This is an animation of Fig. 3 of our paper on the identification of Basins of Attraction in the Local Universe

➡️ full video https://youtu.be/xleH4wCyQtQ
➡️ article https://rdcu.be/dVh3s #NatureAstronomy

#Cosmography #Cosmology #galaxies #universe #Astronomy #Astrophysics #Astrodon #science #STEM #map #maps #cartography #CosmicWeb #Shapley #SloanGreatWall #video #youtube #BoA #BasinsOfAttraction

in the #arXiv

2D watershed void clustering for probing the cosmic large-scale structure

by Yingxiao Song and co-authors
https://arxiv.org/abs/2410.04898

#Cosmology #universe #voids #cosmicvoids #CosmicWeb #astronomy #astrophysics #astrodon #physics #space #science #research #STEM #watershed #clustering

Cosmography: a map of the Supergalactic Equator

this is an element of the video map produced as part of our recent Cosmicflows-4 paper, published in Nature Astronomy

➡️ video https://youtu.be/xleH4wCyQtQ
➡️ article https://rdcu.be/dVh3s

#Cosmography #Cosmology #galaxies #universe #Astronomy #Astrophysics #Astrodon #science #STEM #map #maps #cartography #CosmicWeb #Shapley #SloanGreatWall

New map of the universe shows mega structures

https://www.aip.de/en/news/cosmography-mega-structures/

#Cosmology #Cosmicflows #galaxies #Cosmography #CosmicWeb #Map #3D #maps #ΛCDM #EndOfGreatness #Laniakea #supercluster #LaniakeaSupercluster #Shapley #SloanGreatWall #Nature #Astronomy #Universe #astrodon #astrophysics #science #STEM #news

A recent study(2020) reveals fascinating parallels between the human brain's neuronal network and the cosmic web of galaxies! 🌌🧠 Researchers from Italy found that both networks share similar structural properties, despite their vastly different scales and functions. This groundbreaking research highlights the interconnectedness of our universe and cognition! #Neuroscience #CosmicWeb #BrainScience #Astrophysics 🌟🔗 https://www.sci.news/astronomy/human-brain-cosmic-web-similarities-09066.html

Beautiful cover arts for the latest issues of Nature and Nature Astronomy

Credits:
1. Erik Wernquist/Dylan Nelson (IllustrisTNG Collaboration)/Martijn Oei
2. Carl Knox, OzGrav - Swinburne University of Technology. Cover design: Bethany Vukomanovic

#Astronomy #Astrophysics #Nature #NatureAstronomy #cover #art #covertart #Porphyrion #SMBH #blackhole #blackholes #Cosmology #CosmicWeb #Universe #pulsar #pulsars #ASKAP #radiotelescope #NeutronStar #WhiteDwarf #star #stars #science #STEM #Astrodon

Rencontre avec Ho’oleilana, la nouvelle mégastructure cosmique.

/ Meet Ho'oleilana, the new cosmic mega structure.

✍️ by Valérie Greffoz for Epsiloon Magazine

https://www.epsiloon.com/tous-les-numeros/n39/on_a_vu_une_gigantesque_bulle_pres_de_la_voie_lactee/

#Cosmology #Hooleilana #galaxies #BAO #BaryonAcousticOscillations #CosmicWeb #Cosmicflows #BrentTully #Epsiloon #EpsiloonMag #Astronomy #Astrophysics #Astrodon #space #science #STEM #research #article