Lmst

Ancient Magnetic Fields in the Universe Were Surprisingly Weak, Comparable to Human Brain Activity

New simulations have revealed that the universe's first magnetic fields, formed shortly after the Big Bang, were much weaker than scientists initially thought. These primordial fields were only about one-billionth the strength of a standard fridge magnet, comparable to the magnetic activity found in... [More info]

Find your place in the grand design.

🕸️ 🧭 🌌

#CosmicWeb #DivineDesign #SacredPlace #UniversalPurpose

Les astronomes découvrent Quipu, filament géant de 1,3 milliard d’AL, plus vaste structure connue à ce jour !
https://www.enviro2b.com/2025/07/13/on-na-jamais-vu-quelque-chose-daussi-gigantesque-quipu-la-structure-de-13-milliard-dannees-lumiere-devient-lobjet-le-plus-vaste-de-l/
#Space #Science #Innovation
#Astrophysics #CosmicWeb #Quipu
#Superstructure #CosmologyEmerging

Breaking: Universe's "missing matter" found lounging in a 23-million-light-year gas filament at a toasty 18 million degrees F. Cosmological models vindicated, scientists relieved they weren't completely wrong about everything! 🌌

https://science.slashdot.org/story/25/06/21/064247/the-models-were-right-astronomers-locate-universes-missing-matter

#Astronomy #Space #CosmicWeb

Scientists just discovered a cosmic thread of hot gas that may finally solve the mystery of the Universe’s ‘missing’ matter. #CosmicWeb #MissingMatter #XRayAstronomy

https://geekoo.news/astronomers-finally-locate-the-universes-missing-matter/

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

A cover of the Nature Astronomy journal, dated April 2025, Volume 9, issue 4, featuring a colorful visualization of the filamentary structure of the Cosmic Web linking galaxies together. Color palette runs from blue for underdense to red for overdense. Title reads "Universal connections".

[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/

R.I.P. Sergei Shandarin (1947-2025)

It is my sad duty to pass on the sad news of the death of Sergei Shandarin, who passed away yesterday at the age of 77. He had been suffering from cancer for some time and had been undergoing chemotherapy, alas to no avail. Last week he was moved onto palliative care and we knew he would soon be leaving us. I was going to post something last night when I heard that he had died, but I just couldn’t find the words. I send my deepest condolences to his family, friends and colleagues who are grieving.

(The picture on the left shows Sergei in 2006; I’m grateful to John Peacock for letting me use it here.)

Sergei Fyodor Shandarin was born in 1947 and gained his PhD at the Moscow Institute of Physics and Technology in 1974. He was a student of the great physicist Yakov Borisovich Zeldovich (whom I blogged about here). Sergei moved to the USA in 1991 to take up a Professorship at the University of Kansas, in Lawrence, where he remained until his retirement. More recently he and his wife Vika moved to Toronto to be closer to his daughter Anya and their grandchildren.

Sergei’s main research interests were the dynamics and statistics of the “Cosmic Web” – the supercluster- void network in spacial distribution of galaxies. In particular, he was interested in nonlinear dynamics of gravitational instability, which is the major mechanism for the formation of a large variety of objects in the universe, and in geometrical and topological statistical descriptors of the distribution of mass and galaxies in space.

These topics overlap considerably with my own and I was delighted to have the opportunity to work with Sergei in 1992 when I was invited by Adrian Melott as a visitor to Lawrence fro about a month. My first impression of Sergei was that he was a bit scary – in that typical Russian physicist sort of way – but I soon discovered that, beneath his initially rather fierce demeanour, he was actually a kind and friendly person with a fine sense of humour. I remember that research visit very well, in fact, not only because of Adrian’s and Sergei’s hospitality, but also because the project we did together went so well that we not only completed the research, but I returned to London with a completed manuscript; the paper that resulted was published in early 1993.

After that I kept in touch with Sergei mainly at conferences. Last night after I heard the news that he has passed away I brought a box of old photographs down from the loft and rummaged around for some pictures. Here are two from a meeting in India in 1994, in which you can see Sergei very much in the centre of things:

The picture on the left shows: (standing, L to R) Francis Bernardeau, Paolo Catelan, Sergei, ?*, Paul R. Shapiro; (crouching) Enzo Branchini and Bernard Jones. The picture on the right has the addition of, among others, Varun Sahni (between Paul Shapiro and Bernard Jones), Dick Bond (with his arm on Sergei’s shoulder) and Sabino Matarrese (front left); I’m on the right of the front row. I remember these pictures were taken on an excursion from Pune to see the historic caves and temples at Ajanta and Ellora.

(*I think the unidentified person might be Lars Hernquist, but I’m not sure: I’d be grateful for any information.)

I also particular remember meeting up with Sergei at meetings in Los Angeles, Nice, Valencia (the meeting at which the first picture was taken). and most recently in Estonia (for a meeting to celebrate the centenary of the birth of Zel’dovich). He was always up for scientific discussions, but also liked to relax with a drink or several; he also liked to watch football.

Sergei was a wonderful scientist as well as a warm and generous human being who was held in a very high regard by the cosmological community worldwide. We will all miss him terribly.

Rest in peace, Sergei Fyodor Shandarin (1947-2025)

#CosmicWeb #Cosmology #SergeiFyodorShandarin #SergeiShandarin #UniversityOfKansas

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

A photography of a tactile model of the Cosmic Web, that is, the large scale structure of the Universe. It features a materialization of the Cosmic Web filaments, by means of a grey mesh, and a materialization of Cosmic Web knots, by means of filled, colored blobs. Such knots include: the Great Attractor, Perseus-Pisces, Shapley, Hercules, Norma. The location of our Home galaxy the Milky Way is at the center of the model.

🔭 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

a cosmographic map featuring the cosmological large scale structure in our local cosmic neighborhood. The density field is displayed as semi-transparent isosurfaces, colored grey for the the lower isocontour value, and colored in nuances of red for five higher levels. The resulting structure is filamentary, with high-density knots at the filaments' crossing, an architecture typical of the Cosmic Web. Three colored arrows materialize the cardinal axes of the Supergalactic Coordiante System, centered at our location. Several important actors of our local cosmography are named: Milky Way, Virgo, Arrowhead, Great Attractor, Perseus-Pisces, Coma, Arch, Hercules. The name of the astronomer leading the study is inprinted in the lower right corner of the figure, reading R. Brent Tully. All these elements are drawn against a white background.

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 distribution of galaxies obtained with the Sloan Digital Sky Survey and displayed as two fan-shaped plots with Right Ascension versus redshift distances as coordinates. Galaxies' positions are shown as black points on a white background, featuring filamentary structures typical of the Cosmic Web, which describes the large-scale structure of the Universe. The two fan-shaped plots lie on top of each other, with their boundaries elegantly matching each other's. On the lower plot, running from 0 to 14000 km/s in redshift, and from 8 to 17 hours in Right Ascension, is shown the CfA2 Great Wall, with its iconic stickman-shaped distribution of galaxies. On the higher plot, running from 14000 to 28000 km/s in redshift distances, and from about 9 to 14 hours in Right Ascension, is featured the Sloan Great Wall. A caption completes this figure.

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

An infographic poster entitled "The Universe", featuring a colorful rendition of the Cosmic Web, that is, the three-dimensional network of filaments, voids and knots characterizing the distribution of matter on cosmological scales. In the center, a particular region is encircled, pinpointed and labelled "Laniakea". The infography also offers several levels of insets with explanations, context and graphics on some aspects of the physics at work.

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