iiinova — where your digital self keeps evolving

Cosmic Dawn Center @cosmicdawncenter.bsky.social · 1h

DAWN invites applications for both the DAWN Postdoctoral Fellowship and postdoctoral positions to work on specific projects. The deadline for applications is 6 November 2026, 23:59 GMT +1. candidate.hr-manager.net/ApplicationI...

candidate.hr-manager.net

Postdoctoral positions and DAWN Postdoctoral Fellowship at the Cosmic Dawn Center

The Cosmic Dawn Center (DAWN) invites applications for both the DAWN Postdoctoral Fellowship and postdoctoral positions to work on specific projects. DAWN is a

000

Cosmic Dawn Center @cosmicdawncenter.bsky.social · 29/09/2026

Born with no heavy elements, the first stars were likely extremely bright and massive; yet none has ever been seen. Now DAWN's Zihao Li & colleagues found a promising place to look: a gas cloud with the chemical fingerprint of their explosions, inside an oddly metal-poor galaxy group seen by JWST.

nature.com

First-star imprints in a metal-poor galaxy overdensity near the end of reionization - Nature Astronomy

The discovery of an unusually metal-poor galaxy overdensity that may preserve the chemical fingerprints of the first stars in the Universe provides a new way to investigate how the earliest stellar ge...

041

Reposted by Cosmic Dawn Center

Danmarks Grundforskningsfond @dg.dk · 14/08/2026

📸By joining the DNRF Photo Competition, you can showcase your research, help bring it to a wider audience, get the chance to be featured in a touring exhibition and invited to the DNRF Annual Meeting in October 🚀 👀Deadline August 27 Submit 👉https://dg.dk/en/dnrf-photo-competition-2026/

094

Cosmic Dawn Center @cosmicdawncenter.bsky.social · 07/08/2026

Our annual Summit brought us to Hven, the island of Tycho Brahe 😎 It was not all fun & games though; we also had 6 review talks, 22 contributed talks, 2 discussion sessions, and 1 whisky tasting.

040

Reposted by Cosmic Dawn Center

Danmarks Grundforskningsfond @dg.dk · 02/08/2026

🌞Solformørkelse👉Onsdag den. 12. august ved 20-tiden dækker Månen for omkring 84 procent af solens areal. @anisotropela.bsky.social, @cosmicdawncenter.bsky.social fortæller mere om fænomenet her👇 videnskab.dk/rummet/kig-o...

videnskab.dk

Kig op i august: Sol og Måne formørkes, men meteorer oplyser himlen

Ikke bare Solen, men også Månen formørkes i denne måned, endda på årsdagen for en historisk skæbnesvanger måneformørkelse.

074

Cosmic Dawn Center @cosmicdawncenter.bsky.social · 24/06/2026

This is the most distant massive quiescent galaxy known, seen just 700 megayears after the Big Bang. With ALMA+JWST, Valentino, Pensabene et al. found gas on scales much larger than the galaxy itself. Yet the galaxy has formed almost no new stars for about 100 megayears. arxiv.org/abs/2606.21361

031

Cosmic Dawn Center @cosmicdawncenter.bsky.social · 11/06/2026

Our esteemed associate, Kate Whitaker from @umassamherst.bsky.social, has revived our previous "DAWN-IRES" program: Over the summer, 7 students from the US are visiting DAWN to work on various projects, mentored by DAWNers. Here is Emilie Burnham presenting her current work. And cake. @dg.dk

240

Cosmic Dawn Center @cosmicdawncenter.bsky.social · 13/05/2026

Takumi Kakimoto, NAOJ PhD student & DAWN collaborator, has been featured in a short documentary! The film offers a glimpse into the realities of life as a young researcher: the curiosity, the challenges, and the passion that drives the next generation of astronomers. www.youtube.com/watch?v=4eDL...

youtube.com

『われわれは星を見ているのではない、問いを見ている』｜国立天文台の学生研究者を追った短編ドキュメンタリー

YouTube video by 未読 Me Doc

010

Cosmic Dawn Center @cosmicdawncenter.bsky.social · 23/04/2026

Huge congratulations to @kosmoskasper.bsky.social et al. for winning the 𝗔𝘀𝘁𝗿𝗼𝗻𝗼𝗺𝘆 & 𝗔𝘀𝘁𝗿𝗼𝗽𝗵𝘆𝘀𝗶𝗰𝘀 𝗔𝘄𝗮𝗿𝗱 𝗳𝗼𝗿 𝗢𝘂𝘁𝘀𝘁𝗮𝗻𝗱𝗶𝗻𝗴 𝗘𝗮𝗿𝗹𝘆 𝗖𝗮𝗿𝗲𝗲𝗿 𝗥𝗲𝘀𝗲𝗮𝗿𝗰𝗵𝗲𝗿 𝗔𝗿𝘁𝗶𝗰𝗹𝗲 😃 The prize was awarded for his 𝘛𝘩𝘦 𝘑𝘞𝘚𝘛-𝘗𝘙𝘐𝘔𝘈𝘓 𝘢𝘳𝘤𝘩𝘪𝘷𝘢𝘭 𝘴𝘶𝘳𝘷𝘦𝘺 paper which relied heavily on the DAWN JWST Archive. www.aanda.org/2026-press-r...

aanda.org

Astronomy & Astrophysics (A&A)

Astronomy & Astrophysics (A&A) is an international journal which publishes papers on all aspects of astronomy and astrophysics

130

Cosmic Dawn Center @cosmicdawncenter.bsky.social · 16/04/2026

The Remotely Controlled Teaching Telescope (FUT) is a 60 cm telescope located on Mount Kent, Brisbane, and run by @au.dk. Last week DAWN students Mark Stjerne and Kaj Grimstrup, while using FUT, managed to catch Artemis II on its way back to Earth in this 1 hour series of 1 minutes exposures 🚀

010

Cosmic Dawn Center @cosmicdawncenter.bsky.social · 20/03/2026

Do you have a 3D printer, and would you like your own version of our best probe of the history of the Universe? The Euclid Consortium @ec-euclid.bsky.social just released the instructions for printing Euclid. The default scale is 1:16, or 29.5 cm tall. www.euclid-ec.org/public/3d-mo...

063

Cosmic Dawn Center @cosmicdawncenter.bsky.social · 02/03/2026

DAWN PhD student Pengpei Zhu et al. find ubiquitous neutral gas outflows in massive quiescent galaxies 2 billion years after the Big Bang. However, the winds are unlikely to escape, pointing instead to quick gas recycling rather than removing the gas and kill the galaxy. arxiv.org/abs/2602.17767

arxiv.org

There and back again? Neutral outflows in z~3.5 quiescent galaxies

Neutral gas outflows play a crucial role in the baryon cycle of galaxies, their properties provide key insights into the transition from star formation to quiescence. In this work, we investigate the ...

000

Cosmic Dawn Center @cosmicdawncenter.bsky.social · 24/02/2026

In a new study out today, Steven Gillman et al. show that dust-obscured, star-forming galaxies, observed with both James Webb and ALMA and seen 10–12 billion years ago, were already metal-rich and rapidly forming stars. arxiv.org/abs/2602.185...

020

Cosmic Dawn Center @cosmicdawncenter.bsky.social · 23/02/2026

A new study, led by PhD student Nikolaj Sillassen from DAWN, finds that a proto-cluster of galaxies seen less than 2 billion years after the Big Bang already hosts many "dead" galaxies. 🇬🇧 cosmicdawn.dk/news/james-w... 🇩🇰 cosmicdawn.dk/news-in-dani... @dg.dk #JamesWebb

cosmicdawn.dk

James Webb finds surprisingly mature galaxies in early cosmic megastructure - Cosmic Dawn Center

Using the powerful James Webb Space Telescope, an international team of researchers led by a Danish astronomy student at the Cosmic Dawn Center in Copenhagen showed that some of the most massive galax...

020

Cosmic Dawn Center @cosmicdawncenter.bsky.social · 07/01/2026

Kasper Heintz and a bunch of other DAWN'ers and non-DAWN'ers discovered the first direct observational evidence for dense, neutral gas around a massive galaxy proto-cluster just one billion years after the Big Bang. 🇩🇰 nbi.ku.dk/Nyheder/nyhe... 🇬🇧 nbi.ku.dk/english/news...

nbi.ku.dk

Universets udviklingshistorie omskrives på baggrund af bachelorprojekt fra NBI

De største strukturer i Universet er galaksehobe – grupper af galakser, der indbyrdes holdes sammen af tyngdekraften. Deres udviklingshistorie er nu ved at blive skrevet om – på grund af en studerende...

151

Cosmic Dawn Center @cosmicdawncenter.bsky.social · 06/01/2026

Are you a US citizen grad/undergrad student in astronomy, and would like to see Copenhagen? Apply here for the DAWN-IRES Scholar Program and come to DAWN to do a project over the summer. 𝗗𝗲𝗮𝗱𝗹𝗶𝗻𝗲 𝟭 𝗙𝗲𝗯𝗿𝘂𝗮𝗿𝘆. www.dawnires.com @dg.dk

dawnires.com

DAWN-IRES Scholars Program

International Research Experience for Students Come see copenhagen Learn More

130

Reposted by Cosmic Dawn Center

accounts-leaving-x.bsky.social @accounts-leaving-x.bsky.social · 14/12/2025

Cosmic Dawn Center (an international astrophysics research center based in Copenhagen, Denmark that focuses on studying the very early Universe, particularly the period known as the "cosmic dawn") leaves X (827 followers) Bluesky: @cosmicdawncenter.bsky.social

011

Cosmic Dawn Center @cosmicdawncenter.bsky.social · 24/11/2025

Looking for a PhD or postdoc position? Come to DAWN! Four PhD positions and two postdoc positions are available within the areas of galaxy formation and evolution, first stars, reionization, and kilonovae. cosmicdawn.dk/job-openings/

cosmicdawn.dk

Job openings - Cosmic Dawn Center

Check this page for job openings at the Cosmic Dawn Center.

000

Cosmic Dawn Center @cosmicdawncenter.bsky.social · 22/10/2025

The new instrument called 4MOST, mounted on @ESO's VISTA telescope in Chile, just opened its eye for the first time, and collected spectra of 2400 objects at the same time. www.aip.de/en/news/4mos...

aip.de

4MOST Captures First Light

On October 18, 2025, the 4-metre Multi-Object Spectroscopic Telescope (4MOST) facility, installed on the VISTA telescope at the European Southern Observatory’s (ESO) Paranal Observatory in Chile, obta

100

Cosmic Dawn Center @cosmicdawncenter.bsky.social · 10/09/2025

Gamma-ray bursts are the most energetic events in the Universe, typically lasting milliseconds to a few seconds. Now for the first time since their discovery 50 years ago, a gamma-ray burst kept gamma-ray-bursting for a full day! 🇬🇧 www.eso.org/public/news/... 🇩🇰 www.eso.org/public/denma... @dg.dk

eso.org

Astronomers spot mysterious gamma-ray explosion, unlike any detected before

Astronomers have detected an explosion of gamma rays that repeated several times over the course of a day, an event unlike anything ever witnessed before. The source of the powerful radiation was disc...

021

Reposted by Cosmic Dawn Center

Danmarks Grundforskningsfond @dg.dk · 20/06/2025

📸Are you a researcher in Denmark with a powerful photo that captures your science? For the eighth year in a row, the DNRF invites you to bring your research into focus through our annual photo competition. 👀Deadline Sept. 23, 2025. dg.dk/en/dnrf-phot...

174

Cosmic Dawn Center @cosmicdawncenter.bsky.social · 13/08/2025

We are excited to make the first official announcement for the 𝗖𝗵𝗮𝗿𝘁𝗶𝗻𝗴 𝗖𝗼𝘀𝗺𝗶𝗰 𝗗𝗮𝘄𝗻 conference in Copenhagen in 12–17 April next year 🤩 cosmicdawn.dk/meetings-and...

cosmicdawn.dk

Charting Cosmic Dawn in Copenhagen 2026 - Cosmic Dawn Center

An overview of the 2026 workshop "Charting Cosmic Dawn in Copenhagen."

152

Cosmic Dawn Center @cosmicdawncenter.bsky.social · 01/07/2025

Just out: the #DeepDive survey; a new JWST program to uncover how massive galaxies quenched at z ~ 3–5. The first results include spectra of 150 quiescent galaxies. Big thanks to Danmark Frie Forsningsfond/Sapere Aude & @dg.dk for their support! arxiv.org/abs/2506.22642

140

Cosmic Dawn Center @cosmicdawncenter.bsky.social · 23/06/2025

Currently watching the first light from @vrubinobs.bsky.social’s 3200 megapixel camera 🤩

042

Cosmic Dawn Center @cosmicdawncenter.bsky.social · 06/06/2025

The COSMOS-Web team — including several DAWNers — has just released their full field of 780,000 galaxies. Ethan @startswithabang.bsky.social Siegel provides a great overview of the survey. You can also explore the field yourself in this interactive map: cosmos2025.iap.fr/fitsmap.html

cosmos2025.iap.fr

Viewer – COSMOS-Web DR1

071

Cosmic Dawn Center @cosmicdawncenter.bsky.social · 16/05/2025

Behold the homemade 1.9 m radio telescope, built by DAWNers Gaurav, Kaj, Jiazhe, and Omar📡 The telescope received its first light last week, where the team was able to observe neutral hydrogen in the Milky Way from the institute's backyard. cosmicdawn.dk/news/first-l... @dg.dk

cosmicdawn.dk

First light from student-built radio telescope - Cosmic Dawn Center

During the last six months, academic employee Gaurav Kumar, together with master students Kaj Grimstrup, Liazhe Li, and Omar Rashdan, have built two radio telescopes. One of them now observed its firs...

031

Cosmic Dawn Center @cosmicdawncenter.bsky.social · 09/04/2025

Huge congrats to @cdplagos.bsky.social who has just been awarded the Pawsey Medal by the @science.org.au for her research in galaxy evolution! 🏆 The Medal is awarded to early career scientists for outstanding achievements in physics. vimeo.com/1064968475/0...

vimeo.com

Associate Professor Claudia Lagos - Pawsey Medal 2025

This is "Associate Professor Claudia Lagos - Pawsey Medal 2025" by Australian Academy of Science on Vimeo, the home for high quality videos and the people…

020

Reposted by Cosmic Dawn Center

Danmarks Grundforskningsfond @dg.dk · 08/04/2025

✨Chamilla Terp has unraveled a puzzle that experienced astrophysicists have long struggled to solve. Meet Chamilla and learn more about her dreams and daily life as a young astrophysicist. @cosmicdawncenter.bsky.social vimeo.com/1072508414

vimeo.com

Interview med Chamilla Terp, Cosmic Dawn Center (DAWN)

DK: Hun faldt som en lysende stjerne ned fra himlen med en opdagelse, der gav genlyd i den astrofysiske verden. Chamilla Terp har løst en gåde, som…

182

Cosmic Dawn Center @cosmicdawncenter.bsky.social · 27/03/2025

Earliest sign of the Universe becoming transparent discovered with #JamesWebb. @joriswitstok.bsky.social et al. detected the escape of your fav UV light, Lyman α, the signature of an ionized bubble, only 330M years after the Big Bang. 🇬🇧 cosmicdawn.dk/news/james-w... 🇩🇰 cosmicdawn.dk/news-in-dani...

cosmicdawn.dk

James Webb opdager tidligste tegn på at Universet bliver gennemsigtigt - Cosmic Dawn Center

Universets første galakser blev født indhyllet i en “tåget” gas, og kunne ikke ses tydeligt før denne tåge var lettet. Ved hjælp af rumteleskopet James Webb har et internationalt hold af forskere, led...

031

Cosmic Dawn Center @cosmicdawncenter.bsky.social · 26/02/2025

In an extensive study on galaxy evolution through cosmic time, Marko Shuntov presents a plethora of interesting result, including how the total mass of the galaxies' stars and dark matter are related? 🇬🇧 cosmicdawn.dk/news/new-ins... 🇩🇰 cosmicdawn.dk/news-in-dani... @dg.dk

cosmicdawn.dk

James Webb giver ny indsigt i galaksernes vækst og deres mørke stof - Cosmic Dawn Center

Kortlægning af en kosmisk historie: Et internationalt hold af forskere, ledet af astronomer på Cosmic Dawn Center i København, har udgivet et omfattende studie af, hvordan galakser og deres mørke stof...

130

Cosmic Dawn Center @cosmicdawncenter.bsky.social · 20/02/2025

Time for the annual followup meeting with our main funding body, the Danish National Research Foundation. We're delighted to have this opportunity to discuss not only our own research, but also the Foundation's interests, as well as this year's focus: "Fair recognition of contributions to research"

021