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Cosmology

Cosmology

by Emily Hunt Emily Hunt

A science-oriented feed about cosmology! Part of the Astronomy feeds network. Astronomers can sign up to post here via @bot.astronomy.blue Contains posts from signed up users with #cosmology. Posts here are also included in the main Astronomy feed.

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Feeds Stats

  • 💙 Liked by 312 users
  • 📅 Updated about 2 months ago
  • ⚙️ Provider feed-all.astronomy.blue

Cosmology Likes over time

Like count prediction
The feed Cosmology gains approximately 17 likes per month.

Feed Preview for Cosmology

Astronomy Feeds News
@astronomy.blue
9 months ago
📌 Welcome to the Astronomy feeds 📌 The feeds are a network of astronomy & astrophysics posts by a curated list of professional, amateur, and student astronomers. Want to post here? Tag our friendly bot in a post with the command "signup", like this: @bot.astronomy.blue signup
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Gabe Lynch
@gpxl.bsky.social
1 day ago
Amazing constraints using measurements of the gravitational lensing of the CMB from SPT, ACT, and Planck, combined! And of course, (impressively) consistent with the predictions of LCDM. #cosmology arxiv.org/abs/2504.20038
Unified and consistent structure growth measurements from joint ACT, SPT and \textit{Planck} CMB lensing

arxiv.org

Unified and consistent structure growth measurements from joint ACT, SPT and \textit{Planck} CMB lensing

We present the tightest cosmic microwave background (CMB) lensing constraints to date on the growth of structure by combining CMB lensing measurements from the Atacama Cosmology Telescope (ACT), the S...
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Daniel Pomarède
@pomarede.bsky.social
1 day ago
Cosmography archives 1983: Superclusters, a review by Jan Oort ui.adsabs.harvard.edu/abs/1983ARA%... 🧪 #Cosmology
The title page of Jan Oort's review on superclusters.
A contour plot of the number of galaxies per square degree in Corona Borealis, by Donald Shane, published in Galaxies and the Universe, Volume IX of Stars and Stellar Systems, ed. Allan Sandage, Mary Sandage, and Jerome Kristian (1975).
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Dr Jennifer Sieben
@tardiseeker.bsky.social
1 day ago
#cosmology

As the James Webb Space Telescope looks back at the universe’s first billion years, surprises continue to turn up.

pubs.aip.org
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Nereide
@drnereide.bsky.social
2 days ago
3/ In a space only 1000 light-years across, there are numerous and complex interactions due to: expanding supernova remnants, hot winds from newly formed stars, unusually strong and colliding magnetic fields, and Sagittarius A*, our Galaxy's supermassive black hole. 🔭 🧪 #cosmology #galactic
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Nereide
@drnereide.bsky.social
2 days ago
2/ and magnetic fields near the Galactic Center. The area depicted is about 1,000 light-years across and 2,000 light-years long. It is in Sagittarius some 26,000 light-years from Earth. This labeled version points out interesting sights to see. 🔭 🧪 #cosmology #galactic
This is the labeled version of the primary image. It points out interesting sights to see.
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Nereide
@drnereide.bsky.social
2 days ago
🧵 This panoramic image, combining X-rays from Chandra (orange, green, purple) & radio data (gray) from the MeerKAT telescope, provides an unprecedented view above and below the center of the Milky Way, revealing threads of superheated gas ➡️ chandra.si.edu/photo/2021/g... 🔭 🧪 #cosmology #galactic
The image reveal threads of superheated gas and magnetic fields near the center of the Milky Way. It combines X-rays from Chandra and radio data from the MeerKAT telescope. X-rays are orange, green, blue, and purple. Radio is lilac and gray.
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Astropotamus 🔭
@astropotamus.com
4 days ago
🎙️Per Vino Ad Astra!🍷 I'm looking for guests for my new podcast on #Astrophotography, #Astronomy, #Cosmology, #Heliophysics, #Space and all things #Science! Join me for a virtual glass of wine and cosmic conversations--everyone’s welcome, no PhD required! #PerVinoAdAstra 🔭 From Wine, to the Stars!
Okay everyone; it's time to start discussing the next Big Thing in the world of Astro sciences: 🌟 🍷 Per Vino Ad Astra 🔭 🚀 That's right.  I'm throwing my telescopes and my audio processing rigs into the podcasting world with a future award-winning interview style conversation between me, someone else, and some BYO wine.  Or beer.  Or a cocktail.  Or some water.  Or whatever. I don't judge, just bring something to drink. You and I sit down over a virtual table together, I ask you a few easy questions about astronomy, astrophotography, cosmology, or science in general, then I ask some really hard stuff about Epistemology and Logology, and we share a glass or two.  All while I record it, edit it, add some sound, and publish it somewhere online that makes us look good. Per Vino ad Astra!  From wine, to the Stars! Coming Soon!
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Daniel Pomarède
@pomarede.bsky.social
5 days ago
Happy Birthday card to Gérard de Vaucouleurs, from Vera Rubin. Gérard de Vaucouleurs (1918-1995), born on this day, was a pioneer in the field of extragalactic cosmography (discovery of the Local Supercluster), and many others fields of astronomy, including the study of Mars! #Cosmology 🧪 #Mars
A birthday card offered by Vera Rubin to Gérard de Vaucouleurs, featuring a plot of de Vaucouleurs' number of papers per year as a function of time. Counts of papers are subdivided by disciplines, namely: Cosmology, Galaxies, Milky Way + Stars, Planets, Techniques.
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Nereide
@drnereide.bsky.social
5 days ago
Interesting! A research team studied the spiral galaxy NGC 6946, observing how oxygen and nitrogen are distributed in its H II regions. Using a special instrument (SITELLE spectrometer), the researchers measured the amounts of these elements in 638 regions. 🔭🧪 #cosmology 1/2

Published in #MNRAS: "SIGNALS on the mixing of oxygen and nitrogen in the spiral galaxy NGC 6946", Bresolin et al. This is Fig. 1: for the caption & to read the paper please visit academic.oup.com/mnras/articl... @royalastrosoc.bsky.social

SITELLE view of NGC 6946 obtained from combining the SN2 and SN3 filter images.
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Martin Bourne 🏳️‍🌈
@astromartin.bsky.social
5 days ago
It was great to collaborate with Stephanie Buttigieg (PhD student @cambridgeastro.bsky.social) on her paper, just out on arXiv today: "Premature supermassive black hole mergers in cosmological simulations of structure formation" arxiv.org/abs/2504.17549 #astro #astrocoding #cosmology
Premature supermassive black hole mergers in cosmological simulations of structure formation

arxiv.org

Premature supermassive black hole mergers in cosmological simulations of structure formation

The co-evolution of massive black holes (BHs) and their host galaxies is well-established within the hierarchical galaxy formation paradigm. Large-scale cosmological simulations are an ideal tool to s...
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Daniel Pomarède
@pomarede.bsky.social
5 days ago
NASA’s Roman Mission Shares Detailed Plans to Scour Skies www.nasa.gov/missions/rom... 🧪🔭 #Cosmology
NASA’s Roman Mission Shares Detailed Plans to Scour Skies - NASA

www.nasa.gov

NASA’s Roman Mission Shares Detailed Plans to Scour Skies - NASA

NASA’s Nancy Grace Roman Space Telescope team shared Thursday the designs for the three core surveys the mission will conduct after launch. These observation
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Daniel Pomarède
@pomarede.bsky.social
7 days ago
Cosmography archives 1999: Is the Universe Fractal? A perspectives paper by @vicentjm.bsky.social for @science.org www.science.org/doi/10.1126/... 🧪 #Cosmology
The distribution of galaxies in two wedges, labelled CfA2 and Las Campanas, espectively. Caption reads: A matter of scale. The galaxy distribution for the southern slices of the Las Campanas redshift survey together with the first slice of the CfA2 catalog at the Northern Hemisphere. Although the depth of the Las Campanas slices is four times (in redshift) the depth of the CfA2 slice, the size of the structures is the same in both samples, contrary to what is expected for an unbounded fractal.
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Daniel Pomarède
@pomarede.bsky.social
8 days ago
#Cosmology Gigaparsec structures are nowhere to be seen in ΛCDM: an enhanced analysis of LSS in FLAMINGO-10K simulations by Alexia Lopez and Roger Clowes arxiv.org/abs/2504.14940 🧪
Gigaparsec structures are nowhere to be seen in $Λ$CDM: an enhanced analysis of LSS in FLAMINGO-10K simulations

arxiv.org

Gigaparsec structures are nowhere to be seen in $Λ$CDM: an enhanced analysis of LSS in FLAMINGO-10K simulations

Recently, Sawala et al. 2025 claimed to refute the cosmological significance of the Giant Arc based on their analysis of the FLAMINGO-10K simulation data. In our paper here, we highlight several short...
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Sébastien Parmentier
@saintmalouen.bsky.social
9 days ago
techoreon.com/universe-rot... #cosmology #physics #hubbleconstant #astrophysics

techoreon.com

Scientists Say the Universe Might Be Rotating Every 500 Billion Years — and It Could Solve a Big Cosmic Mystery

A team of astronomers has just found a possible explanation for one of the greatest mysteries in contemporary cosmology. Different measurements of the
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Daniel Pomarède
@pomarede.bsky.social
12 days ago
Cosmography archives 1976: A Picture of The Supercluster by R. Brent Tully and J. Richard Fisher ui.adsabs.harvard.edu/abs/1976BAAS... 🧪 #Cosmology
A conference abstract by Tully and Fisher with a plot of galaxies' positions on a polar projection, shown as black speckles against a white background.
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Daniel Pomarède
@pomarede.bsky.social
12 days ago
Radio Radiation from the Supergalaxy: 47 years without a citation, and bingo! a citation from Nobel Prize Jim Peebles! ui.adsabs.harvard.edu/abs/1953Natu... #Cosmology
List of papers that cite the 1953 paper "Radio Radiation from the Supergalaxy" by JD Kraus and HC Ko
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Daniel Pomarède
@pomarede.bsky.social
12 days ago
Questions de science: Cartographier l'Univers www.youtube.com/watch?v=8Sx0... 🧪 #Cosmology
⭐ 3 questions à ... Daniel Pomarède, cartographe de l'Univers

www.youtube.com

⭐ 3 questions à ... Daniel Pomarède, cartographe de l'Univers

YouTube video by Questions de science
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Astropotamus 🔭
@astropotamus.com
12 days ago
Per Vino Ad Astra! Time to start planning my new podcast about #Astrophotography #Astronomy #Cosmology and #Science in general. If you want to share a virtual glass of wine with me and discuss topics of the Cosmos, let me know. Tag posts with #PerVinoAdAdstra, please! 🔭 From Wine, to the Stars!
Okay everyone; it's time to start discussing the next Big Thing in the world of Astro sciences: 🌟 🍷 Per Vino Ad Astra 🔭 🚀 That's right.  I'm throwing my telescopes and my audio processing rigs into the podcasting world with a future award-winning interview style conversation between me, someone else, and some BYO wine.  Or beer.  Or a cocktail.  Or some water.  Or whatever. I don't judge, just bring something to drink. You and I sit down over a virtual table together, I ask you a few easy questions about astronomy, astrophotography, cosmology, or science in general, then I ask some really hard stuff about Epistemology and Logology, and we share a glass or two.  All while I record it, edit it, add some sound, and publish it somewhere online that makes us look good. Per Vino ad Astra!  From wine, to the Stars! Coming Soon!
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Astropotamus 🔭
@astropotamus.com
13 days ago
Do you live in Sweden? Are you into #Astronomy or #Astrophotography or #Cosmology or just #SpaceScience in general? You should be following @eggstronomer.bsky.social, the National Outreach Coordinator for the International Astronomical Union (IAU)! Even if you don't live in Sweden, you should!!
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Nereide
@drnereide.bsky.social
13 days ago
🧵 A research team led by Violeta G. Rosas (@unileiden.bsky.social) captured, with high-resolution infrared imaging, the torus of dust surrounding a quasar — a very luminous SMBH that accretes matter from its surroundings. Research Paper➡️ arxiv.org/abs/2112.13694 🔭 🧪 #extragalactic #cosmology
ESO's VLT image features a magnificent face-on view of the barred spiral galaxy Messier 77. The image highlights the galaxy's beauty, showcasing its glittering arms criss-crossed with dust lanes, without masking Messier 77's turbulent nature." Credit: ESO https://www.eso.org/public/unitedkingdom/images/eso1720a/
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Euclid UK
@eucliduk.bsky.social
14 days ago
#astro #astronomy #scientist #STEM #research #Euclid #cosmology #astrophysics #science #womeninastronomy #womeninSTEM
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Chanda Prescod-Weinstein 🌌
@chanda.bsky.social
14 days ago
This is a catastrophe for #particlephysics and #cosmology if it succeeds, by the way 🔭🧪⚛️

Department of Energy is indeed sending out notices to universities cancelling all of our grants unless the university agrees to a 15% rate cap.

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