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Cosmic Dawn Center
@cosmicdawncenter.bsky.social
The Cosmic Dawn Center (DAWN) DAWN is a collaboration between the Niels Bohr Institute (U. Cph) and DTU Space, dedicated to uncovering how the first galaxies, stars and black holes formed and evolved in the early Universe.
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
www.aip.de
October 22, 2025 at 2:10 PM
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...
www.eso.org
September 10, 2025 at 11:59 AM
Reposted by Cosmic Dawn Center
📸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...
June 20, 2025 at 7:42 AM
"…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.
www.issibern.ch
August 14, 2025 at 10:25 AM
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
August 13, 2025 at 12:40 PM
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
July 1, 2025 at 12:50 PM
Currently watching the first light from
@vrubinobs.bsky.social’s 3200 megapixel camera 🤩
June 23, 2025 at 4:02 PM
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
June 6, 2025 at 11:12 AM
Bachelor student Charlie Lind-Thomsen led this project, zooming in on astonishing details of dust clouds in nearby galaxies:
🇬🇧 nbi.ku.dk/english/news...
🇩🇰 nbi.ku.dk/Nyheder/nyhe...
@dg.dk
Galactic dust reveals hidden patterns in stunning new images from James Webb
Using the James Webb Space Telescope, a team of researchers led by a Danish bachelor student has uncovered surprising new details about the fine structure of cosmic dust in nearby galaxies.
nbi.ku.dk
May 21, 2025 at 6:10 AM
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
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...
cosmicdawn.dk
May 16, 2025 at 10:59 AM
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...
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…
vimeo.com
April 9, 2025 at 10:21 AM
Reposted by Cosmic Dawn Center
✨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
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…
vimeo.com
April 8, 2025 at 8:00 AM
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...
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...
cosmicdawn.dk
March 27, 2025 at 6:37 AM
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
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...
cosmicdawn.dk
February 26, 2025 at 6:43 AM
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"
February 20, 2025 at 1:46 PM