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...

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

candidate.hr-manager.net

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.

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...

nature.com

Massive congrats to @kosmoskasper.bsky.social on winning an @erc.europa.eu Starting Grant for his project “Charting Cosmic Dawn: The impact of primordial matter on galaxy assembly and reionization” (PRIMORDIAL)! 🇬🇧 cosmicdawn.dk/news/kasper-... 🇩🇰 cosmicdawn.dk/news/kasper-... @dg.dk #ERCStG

Kasper Elm Heintz awarded prestigious ERC Starting Grant - Cosmic Dawn Center

Congratulations to Kasper Elm Heintz, associate professor at the Cosmic Dawn Center (DAWN) at both DTU Space and the Niels Bohr Institute, who has just won an ERC Starting Grant to carry out his proje...

cosmicdawn.dk

📸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/

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.

🌞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...

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.

videnskab.dk

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

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

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...

『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

youtube.com

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...

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 🚀

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...

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

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 ...

arxiv.org

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...

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

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...

cosmicdawn.dk

Congratulations to Viola Gelli for being awarded to "Livio Gratton" prize, Italy's top award for the best PhD thesis in astrophysics 😃 cosmicdawn.dk/news/viola-g...

Viola Gelli wins prize for best PhD thesis in astrophysics - Cosmic Dawn Center

Congratulations and an extra happy New Year to Viola Gelli for winning the "Livio Gratton" prize, Italy's top award for the best PhD thesis in Astrophysics. The prize was awarded for Viola's thesis "D...

cosmicdawn.dk

DAWN on the front page of Nature! 😃 The enigmatic population of galaxies, known as "little red dots" discovered by James Webb may finally have an explanation. 🇬🇧 nbi.ku.dk/english/news... 🇩🇰 nbi.ku.dk/Nyheder/nyhe...

Copenhagen researchers make the front page of Nature: Solving the mystery of the universe's ‘little red dots’

Since the James Webb Space Telescope (JWST) went into operation, red dots in its images have puzzled researchers around the world. Now, researchers from the University of Copenhagen have explaine...

nbi.ku.dk

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...

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...

nbi.ku.dk

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

Huge congratulations to Darach Watson and the rest of the ENGRAVE team for receiving Uddannelses- og Forskningsministeriet's "Into Change Award" of 8 mio. DKK. cosmicdawn.dk/news/interna... @dg.dk

International collaboration honored with prestigious Into Change Award for uncovering the cosmic origin of heavy elements - Cosmic Dawn Center

Professor Darach Watson of the Cosmic Dawn Center at the Niels Bohr Institute, University of Copenhagen, is among six leading European scientists recognized with the inaugural Into Change Award, one o...

cosmicdawn.dk

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

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/

Job openings - Cosmic Dawn Center

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

cosmicdawn.dk

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...

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

aip.de

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

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...

eso.org

📸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...

"…science textbooks are being rewritten in real time" www.issibern.ch/press-releas...

PRESS RELEASE

JWST illuminates the universe’s first Billion years: new Community Opinion charts breakthrough discoveries and open questions.

issibern.ch

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...

Charting Cosmic Dawn in Copenhagen 2026 - Cosmic Dawn Center

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

cosmicdawn.dk

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

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

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

Ethan Siegel@startswithabang.bsky.social · last yr.

780,000 galaxies revealed in JWST's largest science operation With 255 hours of dedicated observing time and a full 0.54 square degrees of sky coverage, COSMOS-Web is JWST's largest deep observing program. Now released, in full, to everyone. bigthink.com/starts-with-... #space #astro #science