anisotropela

News and recent activities

  • News

And by "News and recent activities" I mean news and recent activities involving me :)

October 2024

1 Oct 2024
Outreach

How does the Universe work? Learn about relativity, quantum physics and more in this popsci book by Xavi Bartrolí (I made a tiny contribution in the form of a spacetime diagram).

September 2024

23 Sep 2024
Outreach

How fast does the Universe expand? Our two main methods to determine this disagree. Could it hint at yet undoscovered physics? I talk to Tino Tønnesen from IDA Space Talks.
17 Sep 2024
Outreach

New data from the DESI experiment suggest that dark energy evolves with time. I argue that they are jumping to conclusions.

August 2024

29 Aug 2022
Outreach

How did Tycho Brahe die? Delve into one possible progression in "Days of dust", a historical thriller by Jesper Bernt (where I acted as a scientific consultant).
13 Aug 2022
Personal

I went to see the Pleiads, and indeed saw around 20 meteors, some of them with smoke trails. But even more astonishingly, I saw — for the first time in my life — aurora 😀
12 Aug 2024
Outreach

The Perseid meteor shower peaks today, and the Moon sets early, so get out and watch the skies. I talked to Ritzau about shooting stars.
9 Aug 2024
Outreach

How much power do 40,000 concert guests use when they wave their cell phone flashlights at a Lucas Graham concert? I estimate in the podcast "Basker" (at 16:40).

July 2024

1 Jul 2024
Outreach

What can you see on the stellar sky in July? A new star, that's what! Although twilight nights are upon us, there is lots to see.

June 2024

17 Jun 2024
Outreach

I previously answered a question in my Q&A column about the sound of a cup of coffee. Now I answered a question about the sounds of a coffee cup.
15 Jun 2022
Outreach

Somehow I've ended up as a "periodic table game master" at a party in southern Sweden, and came across an abandoned car cemetery.
3 Jun 2022
Work

I'm on my way to Oslo to be the external examiner at a MSc thesis about cooling processes in the interstellar medium.
3 Jun 2024
Work

Over the past months I've been supervising high-school student Ani Nahapetyan in writing a news story. I'm really proud of her result, so read it here!

May 2024

31 May 2024
Outreach

I try explaining the concept "the geometry of the Universe", using a donut and a Pringles Chip.
30 May 2024
Outreach

James Webb discovers record-distant galaxy, again
29 May 2024
Outreach

New study argues that aliens may be watching us. I argue that probably not.
27 May 2024
Outreach

A "nearby", "habitable" exoplanet has been discovered: Gliese 12b. I talk about it on Radio4 (at 48:40).
24 May 2024
Outreach

I talked to videnskab.dk about Kasper's Science article.
24 May 2024
Work

My colleague Kasper's paper (which I co-authored) on galaxies caught in the act of forming is on the cover of Science today 💪
23 May 2024
Outreach

Today, the first scientific studies from ESA's spacecraft Euclid were released, with stunning images. I write about DAWN's involvement here.
23 May 2024
Work

The Annual Danish Astronomy Meeting is going down these days, and I'm running a splinter session on the scientific need for outreach, and the options in Denmark.
8 May 2024
Outreach

Would you like to disseminate your research to the public? Or support Denmark's main site for this, "Forskerne formidler"? Click here!

April 2024

25 Apr 2023
Outreach

Space boiled down. I talk to radio host Thorkild Jacobsen on P2 about how I communicate astronomy (at 7:40).
22–26 Apr 2023
Outreach

This week you can "Book A Scientist". I give talks at schools, libraries, and companies.
22 Apr 2023
Outreach

Ritzau interviewed me about the Lyrids meteor shower. It was picked up by e.g. DR, where I'm mostly cited for the wise words "If it's cloudy, you can't see anything".

17 Apr 2023
Work

We're having a mini-symposium with historical talks on the development of James Webb and its four instruments, given by some of the people who was there from the beginning.
15–17 Apr 2023
Work

Time for the annual Summit, where we all meet and discuss how cool we are. This year, however, organized mostly by several colleagues since I'm busy organizing the JWST mini-symposium.
5 Apr 2023
Outreach

Can galaxies move away from us faster than the speed of light? Yes! But can we see them? Also yes! I explain.

March 2024

22 Mar 2024
Outreach

Several years back I had a chat about black holes with filmmaker Henrike Meyer which served as inspiration for her latest movie, shown now at CPH:DOX.
6 Mar 2024
Outreach

This spectacular spiral was spotted on the sky over East Greenland. I argue that it's the second stage of a rocket, possibly a Space-X or some Russian rocket.

February 2024

20 Feb 2024
Outreach

Astronomers discovered the most luminous quasar ever, eating a star a day — I reassure TV2's journalist that we shouldn't worry.

January 2024

19 Jan 2024
Outreach

Cosmological crisis: The Universe is expanding, but astronomers disagree on how fast. I explain on videnskab.dk.

December 2023

28 Dec 2023
Outreach

Does Earth have a sister planet on the other side of the Sun? Read my answer here in the Q&A column (in Danish).
23 Dec 2023
Outreach

videnskab.dk interviewed me about the year 2023 in astronomy.
1 Dec 2023
Work

I'm giving a seminar today on my favorite topic, Lyman α radiative transfer, at the "IX Congreso Estudiantil de Física y Matemática" in Guatemala. Online unfortunately.

November 2023

17 Nov 2023
Outreach

Tino Tønnesen from IDA Space Talks made a new podcast episode with me talking about black holes.
16 Nov 2023
Outreach

My colleague Lise is involved in the space mission THESEUS which is now one of three missions left in the race to become ESA's next medium-class mission. Read more here.

October 2023

25 Oct 2023
Outreach

I've drawn a kilonova 😃
(I also wrote an article about one)
13 Oct 2023
"Outreach"

Friday is the annual "Culture Night" where museums, ministries, and other institutions are open all night with various activites. I participate by talking about galaxies at the university.
5 Oct 2023
"Outreach"

The science site videnskab.dk (re-)issued an article on the benefits of spiders and why you shouldn't kill them. I made a drawing on Twitter that they added to the article 😃
2 Oct 2023
Outreach

The two primary ways to measure the expansion of the Universe don't agree. But now Albert Sneppen proposed a new method to help. I explain here.

September 2023

21 Sep 2023
Outreach

My colleague Kasper Heintz caught 16 galaxies in the early Universe, in the process of being formed. I explain here why that's pretty important.
11 Sep 2023
Outreach

My colleague Johan Fynbo investigated a galaxy not through the light it emits, but what is absorbs. I explain here.
5 Sep 2023
Work

I wrote my first single-author article ever, and I'm proud to say that a reference to Jon Bon Jovi passed peer-review 😃

August 2023

29 Aug 2023
Outreach

How is the weather outside the International Space Station? Andreas Mogensen just arrived at the ISS, and I wrote an article about the physical conditions in (nearby) space.
25 Aug 2023
Outreach

The Danish astronaut Andreas Mogensen is launched on 25 August. I'll be answering questions at the newspaper B.T. through live-chat from 8:30 to 10:30.
18 Aug 2023
Outreach

The "Baneby Park" in Viborg is inaugurated today. Among other things the park includes an interactive stellar sky which I helped illustrator Klavs Motzen design.
11 Aug 2023
Outreach

Ha ha jeg I'm "excited" in Danish tabloid #1 😄
11 Aug 2023
Outreach

In a few days, the Perseids will shower us with some 60 meteors per hour. I talked to TV2 East about this beautiful phenomenon.
10 Aug 2023
Outreach

What does the Universe expand into? I explain here (in Danish).
9 Aug 2023
Outreach

Tino Tønnesen from IDA Space Talks did an episode with Andreas Mogensen. Through Tino, I ask Andreas how much astronomy they learn in astronaut school :)
8 Aug 2023
Outreach

Astro-scicomm'er Tina Ibsen and journalist Anders Høeg Nissen wrote a book about Denmark in space. Looking very much forward to reading it (especially because I'm in it 😊).

July 2023

2 Jul 2023
Outreach

The next space telescope, Euclid, is on its way to join James Webb in space. I explain on Radio4 what it will be spending the next six years on (at 33:45).
2 Jul 2023
Outreach

Anders asked med what a "lightyear" is.

June 2023

26–28 Jun 2023
Work

The following three days, the annual DAWN Summit is going down, where all DAWNers meet and tell each other how cool we are.
12 Jun 2023
Work

I'm currently organizing the annual DAWN conference for all ~50 DAWNers, plus a handful or two of guest, but still haven't found better software than tape and scissors.
8 Jun 2023
Work

The Annual Danish Astronomy Meeting is up. I made a poster on citizen science together with Louise Kindt and Tobias Hinse from University of Southern Denmark.
7 Jun 2023
Outreach

I guested the IDA Space Talks podcast again, this time talking about the Big Bang. What happened, and was it really the beginning of time?
3 Jun 2023
Personal

I'm playing at Svansø Festival today with the band "appleseeds!" We practiced three times!

May 2023

31 May 2023
Outreach

Are you a non-astronomer, and would you like to contribute to real research? See here how (you don't really have to be a non-astronomer).
17 May 2023
Outreach

James Webb’s “too massive” galaxies may be even more massive. I wrote a press release about my colleague Clara's work.
10 May 2023
Outreach

I co-authored a paper on nearby galaxies as analogues for more distant ones, and wrote a press release about.

April 2023

24–28 Apr 2023
Outreach

This week is "Book A Scientist" week. I'm talking about astronomy in private and public places around Copenhagen.
18 Apr 2023
Outreach

Videos are trending on SoMe showing people that are confused as to how a mirror knows about an object hidden behind a piece of paper. I explain in Danish radio (P3; at 59:30).

March 2023

28 Mar 2023
Outreach

My colleague Daniele observed the brightest explosion ever seen 💥 I wrote a press release about it.
22 Mar 2023
Outreach

The union "IDA" makes a podcast series about space, and I talk about the formation, evolution, diversity, and history of galaxies.

February 2023

23 Feb 2023
Outreach

I wrote a popular science article about James Webb, its science, and its first results for the magazine Aktuel Naturvidenskab (in Danish).
21 Feb 2023
Outreach

More advertisement for The Danish Science Festival / Book A Scientist: 3½ minutes on TV2 Kosmopol.
16 Feb 2023
Outreach

My colleagues discovered the unexpected shape of a kilonova explosion, and I wrote a story about it.
15 Feb 2023
Outreach

TV2 Kosmopol interviewed me about the "Book A Scientist" week in April that I usually participate in.
1 Feb 2023
Outreach

Early galaxy formation caught in the act with James Webb: I describe a new study showing what is likely the formation of a massive galaxy.

Januar 2023

28 Jan 2023
Work

Danish newspaper Politiken organizes a festival with talks and panel discussions on a broad range of topics. I'll be joining science editor Lasse Foghsgaard for a chat about James Webb.
20 Jan 2023
Outreach

videnskab.dk's Johan Gudmandsen interviewed me about light pollution.
17 Jan 2023
Outreach

I had a chat about living in a simulation with Christian Fuhlendorff, Masoud Vahedi, & Christian Frederiksen in their podcast "Op af kaninhullet" (at 49:25).
13 Jan 2023
Work

Friday is the annual kickoff meeting for all employees at the Niels Bohr Institute, and I'll be talking about James Webb.
3 Jan 2023
Outreach

I wrote about the expansion of the Universe (in Danish though).

December 2022

21 Dec 2022
Outreach

Today is winter solstice, and Radio4 has a program om "darkness": I contribute on dark matter and dark energy (at 01:20:00)
16 Dec 2022
Outreach

Science Magazine has annouced their breakthrough of the year: James Webb. I approve, and explain some differences between that and Hubble in this interview.
12 Dec 2022
Outreach

I talk about the new distance record-breaking galaxy in the radio (at 19:35).
12 Dec 2022
Outreach

Finally! We have confirmed the most distant galaxy ever seen 😃
8 Dec 2022
Outreach

My colleagues found a kilonova associated with a long gamma-ray burst. If that doesn't make sense to you, read my article about it.

November 2022

27–30 Nov 2022
Work

I'm in Paris for a meeting with a research group I'm a part of, and I learned to say "Where is Claude Chirac's grave?" og "She's not dead yet" in French.
22 Nov 2022
Outreach

The first reports of distance record-breaking galaxies are now peer-reviewed. I explain what that implies here.
18 Nov 2022
Work

The Niels Bohr Institute had its annual theme day with inspiration for secondary and high-school teachers. I gave a talk and noticed first my son's teacher and then my dad-in-law 🤷
15 Nov 2022
Outreach

Last year we had to cancel a live-streaming of James Webb's launch in the Planetarium, but tonight we'll take revenge with a series of talks by my colleagues and me.
9 Nov 2022
Outreach

I accidentally accepted to partake in "Cosmic Comedy" in the Planetarium: The stand-up comedians Carsten Bang, Masoud Vahedi and Mikkel Rask will take turns at mocking me 🙈
9 Nov 2022
Outreach

If you like beautiful astrophotos, you should check out the book Himlen set fra Jorden ("The sky from below"). I acted as a fact-checker / consultant.

October 2022

19 Oct 2022
Outreach

Radio4 interviewed me about the recent claims of distance record-breaking galaxies (at 01:15:03).
13–16 Okt 2022
Personal

I'm in Edinburgh. Everyone is friendly!
3 Oct 2022
Outreach

Johan Olsen and Vicky Knudsen let me talk for a full hour about galaxies in their radio program Vildt Naturligt ("Wildly Natural") on Danish Radio P1.

September 2022

26–30 Sep 2022
Outreach

Week 39 is national "Science Festival". I'm giving talks on galaxies, cosmology, and James Webb on various schools and high-schools.
12 Sep 2022
Outreach

Master's student Nikolaj Sillassen was testing his software and accidentally discovered a galaxy group in the early Universe. Read more here.
12 Sep 2022
Outreach

I wrote a news story about the Nature Communications paper I co-authored, and I interviewed myself 😀
12 Sep 2022
Work

I co-authored a paper on a swarm of Lyman α-emitting galaxies orbiting a hyper-luminous galaxy.

August 2022

31 Aug 2022
Outreach

I talked to videnskab.dk about my latest article on the remarkably big galaxies in the early Universe, discovered by James Webb.
31 Aug 2022
Outreach

Has James Webb seen galaxies so distant and so big that they defy physics? Maybe, but… maybe not. Read my explanation (the 2 minutes' overview)
31 Aug 2022
Outreach

Has James Webb seen galaxies so distant and so big that they defy physics? Maybe, but… maybe not. Read my explanation (the 15 minutes' in-depth article)
29 Aug 2022
Outreach

Podcast on James Webb's first galaxies! I'm talking to Kaare Svejstrup from Berlingske's "Pilestræde" about the brand new images of galaxies from Webb.

July 2022

28 Jul 2022
Personal

New profile pic just dropped! My colleague Gabe Brammer just took this pic of me in front of the galaxy cluster MACS J0138 (the one with the dead galaxies and the supernova in 2037).
21 Jul 2022
Outreach

Why does the Carina Nebula that James Webb recently showed us have such a sharp edge? I explain in this Twitter thread (for non-astronomers and astronomers).
18 Jul 2022
Outreach

Mette Mølgaard from videnskab.dk wrote about multiverses, and I provided some facts on brane theories.
13 Jul 2022
Outreach

I'm talking with Mette Blomsterberg in DR/Aftenshowet about the new James Webb observations.
11 Jul 2022
Outreach

On the evening of the release of Webbs first images, I talk about them in Radio4 (at 01:00:53).
11 Jul 2022
Outreach

Frederik Sonne from videnskab.dk interviewed me after the release. We had a look at the five first James Webb images.
12 Jul 2022
Outreach

TV2/News interviewed me on my way to the James Webb release — I'm a little sweaty because I arrived 2 min before after having sprinted 12 km on my bike.
12 Jul 2022
Outreach

James Webb is ready! On Tuesday the first observations are disclosed, and we'll have a reception / press conference at DAWN.
11 Jul 2022
Outreach

Tonight and tomorrow the first observations are revealed.
I explain "5 things you should know about the James Webb Telescope" in this 5½ minute video, produced by videnskab.dk.
8 Jul 2022
Outreach

More on dusty galaxies in Radio4 (at 00:06:10).
4 Jul 2022
Outreach

Galaxies may be completely invisible to humans, but reveal themselves in radio and microwave observations. I'm writing about my colleague's results.

June 2022

29 Jun 2022
Outreach

DR, the Danish public-service tv/radio broadcasting company, made a course for secondary schoolers on exoplanets, and I acted as a consultant.
27 Jun 2022
Outreach

Finally the James Webb Space Telescope started "real" scientific observations! I'm talking about the first images in Radio4 (at 01:01:55).
26 Jun 2022
Outreach

Will black holes swallow the whole Universe? I was interviewed by Simon Taarnskov Aabech from videnskab.dk.
20–21 Jun 2022
Work

These days our annual DAWN Summit is going down, so that's what I've spent a good part of the last month organizing.
19 Jun 2022
Outreach

My colleague Charlotte Mason was interviewed about her James Webb program, and I assisted a little to this video & article.
7 Jun 2022
Work

I'm back in Oslo for the first time in two years 😃 (to be the external examiner at a MSc thesis about machine learning and the Sunyaev–Zeldovich effect).
1 Jun 2022
Work

Black holes helped quenching star formation in the early Universe. I wrote a press release about my colleague's work.

May 2022

27 May 2022
Outreach

I had a chat with artist Christian Skjødt Hasselstrøm who created "µ", a work of art that converts muons into audible impulses.
23 May 2022
Outreach

Our MSc student, Albert Sneppen, used a method known from astrophysics, to say something clever about climate. I wrote a press release about it.
18 May 2022
Outreach

I made a 3D drawing of galaxies 😃 I used a pencil and inverted black and white. If you cross your eyes, they pop out in 3D.
14 May 2022
Outreach

13 years ago, the Planck spacecraft was launched, to observe the light emitted from hydrogen 380,000 years after the Big Bang. For light, time doesn't pass, so I made this comic 😊

April 2022

29 Apr 2022
Outreach

At last all James Webb's mirrors are in place, and the telescope is fully cooled to 6 K. I'm talking about that tonight in Radio4's Aftenradio (at 01:00:30).
28 Apr 2022
Outreach

James Webb's observation schedule is out now. The first observations will be carried out 27 June. I was interviewed to the magazine "Ingeniøren" about one of the programs, "COSMOS-Web".
27 apr 2022
Outreach

As a part of The Danish Science Festival, I'm giving a public talk about the James Webb Space Telescope in Tårnby Library. There's room for 500 people, so sign up if you'd like to join.
22 apr 2022
Outreach

I wrote an article about atoms. It's in Danish, but I'll translate to English "soon".
20 apr 2022
Outreach

My colleague Seiji discovered an object which might be the transition from a dusty galaxy to a quasar. I'm talking about it here in Radio4's "Den Nye Rumalder" (at 38:45).
9 apr 2022
Outreach

My article about spiral galaxies is now available in Danish.
7 apr 2022
Outreach

I talked to a journalist from the Laser Focus World magazine, who wrote a splendid article about Earendel.

March 2022

30 Mar 2022
Outreach

My colleagues discovered a single star, 28 billion lightyears away, and dubbed it "Earendel". I wrote a press release about it.
9 Mar 2022
Research

Paper day: My colleague Francesco Valentino found an interesting galaxy with the ALMA observatory, and I modeled it with my computer.
6 Mar 2022
Outreach

TV2/Lorry had a feature story on the Niels Bohr Institute Centennial, and I talk about galaxies and James Webb and stuff like that (from 12:00).
1 Mar 2022
Outreach

I wrote a chapter about (the discovery of) galaxies in the book Lyset fra Bohr ("the light from Bohr"), marking the 100 years' anniversary of the Niels Bohr Institute.

February 2022

17 Feb 2022
Outreach

I'm talking more about rogue planets in the radio station "Den Uafhængige" (begins at 1:01:10).
16 Feb 2022
Outreach

Astronomers found a bunch of "rogue" planets, roaming aimlessly around without a star. Journalist Mette Mølgaard interviewed me about this.
11 Feb 2022
Outreach

James Webb's first light is the star HD 84406, which right now looks like 18 crooked dots because Webb's 18 mirrors are all crooked. I'm talking about it in Radio4 (at 20:30).

January 2022

10 Jan 2022
Outreach

James Webb is home! With a small boost correcting its speed by a mere 1.6 m/s, Webb now orbits L2. I'm talking about that on Radio4 (from 29:42).
10 Jan 2022
Outreach

I follow up in Radio4 on James Webb which has now surpassed its most critical points (from 33:10).
1 Jan 2022
Outreach

The University of Copenhagen's most read research article in 2021 was my story about Albert Sneppen's black holes 😃

December 2021

27 Dec 2021
Outreach

What can go wrong for James Webb? I was talking about the perils of James Webb in Radio4 (starts at 9:00).
25 Dec 2021
Outreach

Danish public-service TV ("DR")'s news allowed me to draw and explain about the launch of James Webb.
25 Dec 2021
Outreach

TV2 news (different from TV2 News) also had a story where I talk a little about the launch (at 4:40).
25 Dec 2021
Outreach

Finally the day came, and the launch of James Webb exceeded all expectations!
I was commenting on the whole process on TV2 News.
24 Dec 2021
Personal

Merry Christmas! I've been making James Webb Christmas decorations 🔸🔶🔸
23 Dec 2021
Outreach

I wrote a thread about the James Webb telescope, why it was delayed, what it will observe, and how (you don't need a Twitter account to read it).
22 Dec 2021
Outreach

I'll be hosting (and speaking at) a live-streaming of James Webb's launch, with talks and press and bubbles 50 hopefully happy astronomers 🚀🍾
Would you like to join?
21 Dec 2021
Outreach

An extraordinarily enthusiastic Frederik Thymark from videnskab.dk interviewed me about James Webb.
20 Dec 2021
Outreach

Together with the news team of the University of Copenhagen, I wrote a press release on the launch of the James Webb Space Telescope.
18 Dec 2021
Outreach

Not everything is James Webb: Mikkel Vuorela from the newspaper Information interviewed me about the end of the world and wrote this article.
17 Dec 2021
Outreach

Gunver Lystbæk Vestergård from the newspaper Weekendavisen interviewed me about James Webb and wrote this article.
16 Dec 2021
Outreach

Søren Flott from Dagbladenes Bureau interviewed me about James Webb and wrote this article.
8 Dec 2021
Outreach

My colleague Kasper Heintz found a promising way to investigate star-forming gas in the early Universe. I explain here.
7 Dec 2021
Outreach

In an hour I'll be in Radio LOUD, talking to astral traveler Anja Scherrer-Tangen about what she experiences on her journeys…
5 Dec 2021
Outreach

The latest issue of the Norwegian magazine "Astronomi" is out. I wrote an article on how spiral galaxies get their beautiful spiral patterns (in Norwegian).
1 Dec 2021
Outreach

My equations on light and thermodynamics appear in this year's Christmas calendar show in TV2, "Kometernes Jul".

November 2021

30 Nov 2021
Personal

More music! My friend Mikkel and I recorded a Danish version of Bruce Springsteen's Streets Of Philadelphia. It's called "Nørrebros Sidegader", and ended up being rather personal.
21 Nov 2021
Personal

Our (disbanded) band Ampel put a new record on Spotify. It's called "Traurig und Langweilig" and consists of 21 old (demo-)tracks from 2003–2012.

October 2021

18 Oct 2021
Outreach

42 years ago, The Hitchhikers Guide To The Galaxy was published, and in this 42nd episode of the podcast Rumsnak, I talk for 42 seconds about which question I'd like an answer for (at 4:12).
12 Oct 2021
Outreach

The Planetarium inaugurates a new dome today, and I'll be joining the line-up together with such fine people as Anja C. Andersen, Holger Bech Nielsen, and Pernille Rosendahl.

September 2021

27-30 Sep 2021
Outreach

This week I'll be giving lectures on astronomy and cosmology to high-school classes. Sign up here.
23 Sep 2021
Outreach

My colleague Kate Whitaker found six galaxies that ran out of gas in the early Universe, while most other galaxies were highly active. I wrote a press release about it
21 Sep 2021
Outreach

If you'd like to hear more about the spiral arms of the Milky Way, I'm talking about them in Danish Radio4 here (at 3:40).
20-22 Sep 2021
Work

The next three days everyone at DAWN will tell each other how cool we are at our "DAWN Summit 2021" workshop.
20 Sep 2021
Outreach

Rasmus Fredsted from videnskab.dk interviewed me about some recent radio observations showing that the Milky Way might have not four, but five spiral arms.
17 Sep 2021
Work

Currently planning our annual DAWN summit using the popular sceduling app "Cut'n'Glue" 😬
14 Sep 2021
Outreach

I explain how you can see the same supernova four times in Danish radio P1 Morgen (at 1:16:37).
14 Sep 2021
Work

My colleagues saw the same supernova three times, and we'll see it again in the year 2037. I wrote a press release about it.
8 Sep 2021
Work

It is finally happening!
On December 18, the James Webb Space Telescope — in which we're heavily involved at DAWN — is launched into space from French Guyana on an Ariane 5 rocket.

August 2021

17 Aug 2021
Outreach

I explain in more detail how a black hole can reflect the Universe on the Danish science site videnskab.dk.
9 Aug 2021
Outreach

My colleague Kasper Heintz was awarded 180 hours of observing time at the Very Large Telescope for studying "fast radio bursts". I explain what that means here.

July 2021

12 Jul 2021
Outreach

Albert Sneppen, student at DAWN, calculated something cool about black holes. I explain what here.

June 2021

28 Jun 2021
Outreach

Are you a teacher / disseminator, perhaps you'd be interested in this (free) Space Seminar at the Planetariet (where I'll be talking, among others).
17 Jun 2021
Outreach

Are you considering studying astronomy? Or just want to know what we're doing in here? Then read my article about our research in galaxies here.

May 2021

28 May 2021
Outreach

What is a "model galaxy? How do astronomers work? A slightly more complex popular science article on videnskab.dk than I usually write, but with animations!
11 May 2021
Outreach

I'll be talking about the early Universe at Astronomy On Tap's public (and free) event in Copenhagen. You should come!

April 2021

29 Apr 2021
Outreach

Videnskabsklubben ("The Science Club") are broadcasting a science quiz for high-school students, and I'm co-quiz-mastering.
26–29 Apr 2021
Outreach

This week is "The Danish Science Festival" where you can Book A Scientist — I'm participating with several public talks
6–11 Apr 2021
Outreach

This week I'm hosting UCPH's new Twitter outreach channel, @KU_forskeren, where UCPH researcher take turns on disseminating their science.

March 2021

29 Mar 2021
Outreach

What is a particle actually? I try to answer this question from a reader.
28 Mar 2021
Outreach

What keeps the Solar System in place in the Milky Way? I was interviewed about gravity by videnskab.dk's Christian Lindberg.

February 2021

24–25 Feb 2021
Work

Our CIDER workshop is going down today and tomorrow at 17:00–19:30 CET. Click here to follow our live-streaming on YouTube, or write me up to join.
21 Feb 2021
Work

I've been doing some galaxy modeling and Lyman α radiative transfer resulting in a paper that has just been published (Noterdaeme et al. 2021).
18 Feb 2021
Outreach

Everything in the Universe is built of little particles!
I participated in this "ABC of science" video from the Ministry of Education. With special effects!

January 2021

29 Jan 2021
Outreach

Does the Universe expand faster than the speed of light? Oh yes it does — read my answer in the Q&A column (Danish).
12 Jan 2021
Outreach

I answered a question about the constellation Scorpius, and end up talking a bit about astrology (Danish).

December 2020

30 Dec 2020
Outreach

Apparently I'm now the "usual astrophysicist" of the Danish satire show Tæt På Sandhedens 😄 (starts at 5:00).
17 Dec 2020
Outreach

My former colleague Mikkel discovered something cool about galaxy evolution. I wrote an article about it.
1 Dec 2020
Outreach

The Arecibo telescope — the world's largest for over 50 years, and movie star of Contact and GoldenEye — has just collapsed. A saddening sight :(

November 2020

24 Nov 2020
Outreach

My article about galaxy formation has been translated to English.
23 Nov 2020
Outreach

My article about galaxies has been translated to English.
17 Nov 2020
Personal

I've made a comic. It's called "Life of a comet is short".
12 Nov 2020
Outreach

I'm allowed to chat for a full hour in this radio show, AND — and here's the best part — I get to choose the music! 😃

October 2020

26 Oct 2020
Work

Together with three other astronomers, I've organized a workshop on the Cold ISM (interstellar medium) During the Epoch of Reionisation (CIDER). Click here to join us!
23 Oct 2020
Outreach

My video "5 things you must know about galaxies" was shown in TV2/Lorry today.
10 Oct 2020
Outreach

I'm the "Person of the Week" in the newspaper Information, talking about black holes.
6 Oct 2020
Outreach

The Nobel Prize in Physics 2020 went to astrophysics this year! Penrose, Gehz, and Genzel receive the Prize for their work on black holes, and I was interviewed about their contributions.

September 2020

23 Sep 2020
Outreach

How are galaxies formed? I wrote an article about galaxy formation with a step-by-step guide at videnskab.dk — a "sequel" to the article about galaxies from Sep 7.
23 Sep 2020
Outreach

I dabble on about time & entropy i Radio4 (at 36:08).
21 Sep 2020
Outreach

I went to watch TENET with videnskab.dk's journalist Frederik Sonne, and we had a chat about time & entropy.
12 Sep 2020
Outreach

How big a "rum ball" truffle cake can you make before it collapses? When does it start fusion? How happy will our Prime Minister be? See the answers in this interview.
7 Sep 2020
Outreach

What is a galaxy, what are they made of, and what kinds are there? I wrote a popsci article about galaxies (in Danish).

August 2020

31 Aug 2020
Outreach

Today I was interviewed by the stand-up comedian Joanatan Spang, who wanted to know how big a "rum ball" truffle cake can be. Here are my calculations. The interview will be shown on television on Sep 12.

July 2020

11 Jul 2020
Outreach

Last night I saw the comet C/2020 F3 (NEOWISE), and captured a picture of it. Here's a guide if you want to see it too; it's very beautiful.
1–2 Jul 2020
Work

I'm arranging a workshop for all DAWNers and DAWN-affiliates, and made this webpage.

June 2020

22 Jun 2020
Work

I co-authored a really cool paper, reporting on the detection of a group of galaxies emitting Lyα cooling radiation as they are forming.
15 Jun 2020
Work

I'm no longer at the University of Oslo. From today, I'm at the Cosmic Dawn Center woohoo!

May 2020

25 May 2020
Outreach

I've been answering questions from a high school class on cosmology (in Danish though).

April 2020

24 Apr 2020
Outreach

The Hubble Telescope was launched 30 years ago today. Corona forced us to skip the planned public talk, and instead unbox this hitherto secret image.
3 Apr 2020
Outreach

Tonight, Venus will pass in front of the Pleiades. Around 9 pm, they'll be in the West, and in Denmark the ISS will fly just below Orion at 9:03 pm.

March 2020

23 Mar 2020
Outreach

I wrote an article about supernovae for non-astronomers. Read it!
12 Mar 2020
Outreach

Today I visited Tina Ibsen and Anders Høeg Nissen's podcast RumSnak to talk about the Big Bang. In Danish, though.
2–6 Mar 2020
Work

I'm going to Paris to work with Pasquier Noterdaeme on damped Lyα absorbers (and give two talks).

February 2020

13-16 Feb 2020
Personal

Sigurd, Rikke, and I are skiing for a few days in Oslo

January 2020

22 Jan 2020
Work

I'll be talking about Andromeda and other galaxies at the Cph. Planetarium, and if the sky is clear we'll try to observe it.

December 2019

28 Dec 2019
Outreach

I started updating my encyclopedia, and wrote a bit about black holes.
5 Dec 2019
Outreach

Most stars are in fact two stars, orbiting each other at everything from one star radius to several light-years.

November 2019

12 Nov 2019
Outreach

Stars move in and out of a galaxy's spiral arms. I write about it here.
1 Nov 2019
Outreach

Rapper and toastmaster Per Vers summerizes my research in a freestyle rap
1 Nov 2019
Outreach

Copenhagen's Planetarium turns 30 years old. I'll be science slamming about my research in the evening.

October 2019

25 Oct 2019
Outreach

X-ray satellite scientist Selina Howalt Owe and I are starring in this advertisement for the Planetarium's birthday.
21 Oct 2019
Work

Today I gave a seminar about cooling radiation and galaxy formation at UCL, London.
11 Oct 2019
Work

I've co-authored this paper out today on the evolution of rest UV propoerties of galaxies out to z ~ 5.
5 Oct 2019
Outreach

Tonight I was interviewed in Norwegian radio about the autumn night sky.
4 Oct 2019
Work

Writing applications and cleaning up my rum collection…
(9 different rums which I rated between 1 and 8 stars)

September 2019

23-24 Sep 2019
Outreach

As a part of Science Festival 2019, I'm talking about cosmology at "Det Fri Gymnasium", and "Athene School for highly gifted children".
12 Sep 2019
Work

I'll be guest-lecturing on (the history of) cosmology at UCPH's "Cosmology (Astro 3)" course.

August 2019

29 Aug 2019
Work

I created a webpage for a course I'm giving on "classic papers" in astrophysics & cosmology.
20 Aug 2019
Outreach

A new planet has been discovered, 63 light-years away. I'm talking about it on the radio.
14 Aug 2019
Tweet

So my colleague Matt Hayes reproduced a quasar spectrum by adjusting his running speed over a few kilometers.
12 Aug 2019
Outreach

I've been identifying objects in a 300 years old drawing.
8 Aug 2019
Tweet

Can galaxies recede faster than the speed of light? Oh yes they can!

July 2019

26 Jul 2019
Tweet

Um so yesterday, an asteroid almost wiped us out…
28 Jul 2019
Personal

During our vacation, we learned how to solve a Rubik's cube.
23 Jul 2019
Personal

My family and I have gone to Austria for vacation. It's very beautiful :)
20 Jul 2019
Outreach

Today I was interviewed in Norwegian radio about stars and sand grains.
17 Jul 2019
Outreach

My stepmom found that I've been quoted in the magazine Ude & Hjemme. This is basically one step below "Nature" 😂
17 Jul 2019
Tweet

PSR B1919+21 has been re-observed — you may know the original observation from Joy Division's Unknown Pleasures.
12 Jul 2019
Tweet

Can I accelerate a rocket with my mind? A question I've been wondering for a long time was solved after asking on Twitter and StackExchange.
11 Jul 2019
Tweet

50 years ago today, Space Oddity was released.
9 Jul 2019
Outreach

How fast is the fastest galaxy moving away? Three times the speed of light!

June 2019

29 Jun 2019
Outreach

I gave a "TED talk" about galaxies at my friend Cat's insane birthday party.
28 Jun 2019
Tweet

How can we detect particles so small that they go right through Earth?
24 Jun 2019
Work

Today's my birthday. I celebrated by giving a seminar on Lyα. My colleague Bo took this picture which he dubbed "Fit by arm".
13 Jun 2019
Work

I'm in Stockholm at the "Zoom In & Out" workshop. My colleague Christian Herenz took this picture while I was giving a talk.
5 Jun 2019
Outreach

The article about stars vs. grains of sand was translated to Norwegian on forskning.no.
2 Jun 2019
Outreach

Are there more stars in the Universe than grains of sand on the beaches of Earth? I was interviewed to videnskab.dk.

May 2019

29 May 2019
Tweet

Today is the 100 years' anniversary for the Solar eclipse that consolidated Einstein's theory of general relativity. The paper is fun!
16 May 2019
Outreach

How bright was the Universe after Big Bang? What's the color of the Universe? I calculate it here.

April 2019

17 Apr 2019
Outreach

How dark is a cosmic "void"? Pretty dark, according to my order-of-magnitude calculation here.
14 Apr 2019
Outreach

I gave yet another interview about flat Earth conspiracists. Unfortunately, I'm quite misquoted. I'll contact the author at some point…
11 Apr 2019
Outreach

What does the image of the black hole actually show? I explain it here.
10 Apr 2019
Tweet

The rumors have been confirmed! We now have a real picture of a real black hole!
9 Apr 2019
Work

My paper has been accepted yay!
4 Apr 2019
Work

I'm starting up a new project. I want to calculate analytically the amount of cooling radiation emitted in Lyα when a galaxy forms.

March 2019

29 Mar 2019
Tweet

Some old Einstein letters have just been discovered in a basement outside Copenhagen.
21 Mar 2019
Tweet

Okay so apparently, on average Mercury is closer to Earth than Venus, despite its orbit is closer to the Sun.
14 Mar 2019
Tweet

Having some fun with numbers and galaxies.

February 2019

17 Feb 2019
Outreach

The article I wrote about the Big Bang has been translated to Norwegian on forskning.no.
1 Feb 2019
Tweet

Did you know that on Mars, sunsets are blue? See here why.

January 2019

9 Jan 2019
Outreach

The Danish National Research Foundation reported my award. Now if they could just award me a grant it would be nice…
9 Jan 2019
Outreach

Titan, the University of Oslo's newsletter, reported my award.
9 Jan 2019
Outreach

Woohoo! My article from last year was awarded best Danish popular science 2018 😃