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Knud Jahnke

@knudjahnke.bsky.social
380 followers 327 following 1.1K posts

Astronomer, Euclid Consortium functionary; likes black holes, galaxies, and sustainable research.

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Knud Jahnke @knudjahnke.bsky.social · 09/10/2026
Hmm, strange. Was there always some manual moderator intervention involved?
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Knud Jahnke @knudjahnke.bsky.social · 08/10/2026
No delay, I meant the "buy time" for the arXiv org to discuss and implement effective measures to deal with the flood of genAI (or not) submission flood.
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Knud Jahnke @knudjahnke.bsky.social · 07/10/2026
I have the impression that at this point they are completely overwhelmed. The "not-more-than-2-per-month" rule from last week was ad hoc to buy some time. Too much noise, drowning out the signal.
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Knud Jahnke @knudjahnke.bsky.social · 01/10/2026
I fully agree, but I'm just surprised about people submitting their 1st (!) version so late. I did this too, but only for ESO proposals in the olden days where your could only submit once. But I found that very stressful. Nowadays one could calmly do some final passes after a "save" version is in.
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Knud Jahnke @knudjahnke.bsky.social · 01/10/2026
I agree on the scicomm nightmare, they also don't make a catchy abbreviation. That said, since it's just Latin clouds sort of makes it neutral-ish, bc no-one really speaks Latin anymore. 🙃 And to translate "milky" into other languages, try that with German... 😬
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Knud Jahnke @knudjahnke.bsky.social · 01/10/2026
Maybe we should revert to "Nubecular Minor" and Major, which, yes, is eurocentric Latin, but content-wise neutral...
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Knud Jahnke @knudjahnke.bsky.social · 01/10/2026
I think optical/NIR astronomy could also be interested in such coatings. We paid a lot of money for many-layer coatings of the #Euclid near-infrared filters, and still there was measurable inhomogeneity. I think the company we used already pushed commercial gear to its limits.
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Knud Jahnke @knudjahnke.bsky.social · 01/10/2026
Paging @mpoessel.de, @astrophysikerin.bsky.social, you might be interested in this piece of #Heidelberg #astronomy history.
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Knud Jahnke @knudjahnke.bsky.social · 01/10/2026
Can someone tell me why for JWST/HST/ALMA/... people make their first proposals submission so late? One can submit multiple versions so it simply helps people's mental health to submit a V0.1 at least a day before and then take it from there.
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Knud Jahnke @knudjahnke.bsky.social · 01/10/2026
The evaluation process this cycle will be brutal. Even with all proposals below "medium" being refereed outside of panels. I'm happy I served last cycle and not this one.
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Knud Jahnke @knudjahnke.bsky.social · 30/09/2026
It's not a slip. There is a whole range of topics behind this comparison: from discouragement of girls to take up STEM topics to old boys networks to glass ceilings for women in science. So it's an absolutely valid comparison and point to make.
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Knud Jahnke @knudjahnke.bsky.social · 29/09/2026
My institute is offering (free) flu and covid booster shots next week. Well received, like every year.
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Knud Jahnke @knudjahnke.bsky.social · 29/09/2026
Are you sure that you want to go down that road?
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Knud Jahnke @knudjahnke.bsky.social · 28/09/2026
I'm very sorry to hear that, and I can fully understand you not using Mastodon again. My bubble there is small and very benign, but then again I probably wouldn't be targeted in the same way if it were larger and less benign. :-(
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Knud Jahnke @knudjahnke.bsky.social · 28/09/2026
I sent you the string by DM.
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Knud Jahnke @knudjahnke.bsky.social · 28/09/2026
This is a search for my own papers by author name, removing a number of coauthor names to prevent other Jahnke,K's being included. Returns ~600 entries. And I notice both a delay in completing some of the stat fields on the side as well as displaying any entry beyond number ~20.
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Knud Jahnke @knudjahnke.bsky.social · 28/09/2026
I think we need to go back to curated link lists pointing to non-LLM polluted websites as a seal of trust. I'm being serious here.
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Knud Jahnke @knudjahnke.bsky.social · 28/09/2026
I am on Bluesky and Mastodon. While Mastodon has some hot takes ("did you try using Linux"), it's much calmer, not as breathless as Bluesky. I can't read stuff on Bluesky for more than 10min at a time, Mastodon is much better for my mental health in comparison. Sadly much less astro there by now.
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Knud Jahnke @knudjahnke.bsky.social · 28/09/2026
In November, #ADS wants to switch all searches over to #SciX. Currently, for me, complexer searches take factors of many longer in SciX than in ADS. One benchmark that I have takes 7s on ADS, 40s on SciX. Do you have similar experiences? #astronomy #literature #papers
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Knud Jahnke @knudjahnke.bsky.social · 27/09/2026
Just apply the standard food-safety precautions before consumptions and you'll be fine: (a) smell test, (b) a good rinse, (c) boil for 15 minutes.
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Knud Jahnke @knudjahnke.bsky.social · 24/09/2026
Yes, my book-writing count this year is still at ... <counting> zero. Which also happens to be last year's number.
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Knud Jahnke @knudjahnke.bsky.social · 24/09/2026
However "authored or co-authored" is not such a great combination. In that category I'm at ~140 this year. Without AI. But within a very large collaboration. Especially a statistician could provide substantial instances of small input to other people's papers. Unless it's all AI...
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Knud Jahnke @knudjahnke.bsky.social · 22/09/2026
But no-one has to watch that. Literally.
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Knud Jahnke @knudjahnke.bsky.social · 21/09/2026
But some rich people got even richer. It's more lucrative to gut a rich country than a poor one, so that's what they now do.
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Robert "The Bobby Yaga" McNees @mcnees.bsky.social · 21/09/2026
Happy 118th birthday, spacetime. 🧪 🔭 ⚛️ Hermann Minkowski addressed the 80th Assembly of German Natural Scientists and Physicians #OTD in 1908, offering a radical four-dimensional reformulation of Einstein's theory of special relativity. Here is how he opened his address.
"The views of space and time which I wish to lay before you have sprung from the soil of experimental physics, and therein lies their strength. They are radical. Henceforth space by itself, and time by itself, are doomed to fade away into mere shadows, and only a kind of union of the two will preserve an independent reality."
- Hermann Minkowski, 1908
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Claas Gefroi @claasgefroi.bsky.social · 21/09/2026
Grauenvoll, wie Union und SPD es geschafft haben, das Wort "Reformen" vollständig zu diskreditieren, in dem sie es zum Synonym für Kürzungen und Sozialabbau gemacht haben.
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Katharina Nocun @kattascha.bsky.social · 21/09/2026
Stellt Euch vor, es würde in Reaktion auf die Berlin-Wahl in den nächsten Wochen bundesweit intensiv über die Frage gestritten werden, was man gegen horrende Mietpreise in Großstädten tun kann. Thema in allen Talkshows, Task-Force auf Bundes- & Landesebene. Volles Programm. Das wär doch mal was.
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Knud Jahnke @knudjahnke.bsky.social · 16/09/2026
If the answer is not there within 3 years then we're not interested!1!!
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Katharina Nocun @kattascha.bsky.social · 13/09/2026
Wir brauchen dringend einen Parteispendendeckel. Es darf nicht sein, dass Millionäre darüber entscheiden, wie sichtbar Parteien im Wahlkampf sind.
spiegel.de
Großbritannien: Millionenspende an Rechtspopulisten entfacht Streit über Parteienfinanzierung
Rekordsummen von Kryptounternehmern fließen an die britischen Rechtspopulisten der Partei Reform UK – und heizen die Debatte über eine Obergrenze für Parteispenden an. Steht eine Gesetzesreform bevor?
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Knud Jahnke @knudjahnke.bsky.social · 14/09/2026
No, because he doesn't own a casino there, so he wouldn't make money from such a trip.
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Robert Fietzke @robertfietzke.bsky.social · 13/09/2026
Schon fast 200.000 haben die Protestnote an ARD und ZDF unterschrieben.
weact.campact.de
KIKA: Keine Bühne für Rechtsextreme bei logo!
Wusstest Du, dass ein AfD-Politiker bei KIKA ungefiltert zu Wort kam? Nun ist ein zweites Interview geplant. Jetzt unterzeichnen ✍️ und teilen: Keine Rechtsextreme im Kinderkanal!
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Knud Jahnke @knudjahnke.bsky.social · 14/09/2026
Gerade Prien fordert Empathie. Schon fast komisch.
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Peter Coles 🏳️‍🌈 🏳️‍⚧️ 🇮🇪 @telescoper.bsky.social · 13/09/2026
Space Warps Needs You! The Space Warps Euclid project is entering the closing stages, but there is still about a week in which you can help with refining the final sample.
telescoper.blog
Space Warps Needs You!
The Space Warps Euclid project is entering the closing stages, but there is still about a week in which you can help with refining the final sample.
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Euclid Consortium @ec-euclid.bsky.social · 11/09/2026
#CitizenScience afficionados, #Euclid scientists would like to again solicit your input for classifying #GravitationalLensing systems. We need a sprint finish before the science analysis can be completed. 18000 galaxies that are maybe acting as lenses are waiting for your eyes and brains. 🔭 #ESA
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Terence Tao @teorth.bsky.social · 11/09/2026
A group of 25 Fields Medalists, including myself, have made a joint declaration on Math and AI: mathandai.org . We welcome additional signatories. See also this article in the Economist announcing the declaration: www.economist.com/science-and-...
mathandai.org
Declaration — Math and AI
Read the declaration and add your name.
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Knud Jahnke @knudjahnke.bsky.social · 10/09/2026
Sicher!
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Knud Jahnke @knudjahnke.bsky.social · 10/09/2026
Word! That garage could easily hold 20, without maneuvering. And the rest is fine already.
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Astronomer Royal for Scotland | Catherine Heymans @astroroyalscot.bsky.social · 09/09/2026
Mutuals from twitter times will remember my very dark yrs of Long Covid 😵‍💫 I lost so much, but found a wonderful silver lining to the dark cloud: I decided to use all the time in bed to v slowly write a book. It took 3yrs. I can't quite believe that tomorrow is publication day & Fri is book launch! 🥹
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Knud Jahnke @knudjahnke.bsky.social · 05/09/2026
Funny how these questions are still the same for every astronomer at any point in their career 😃 I think that tells us we're working on the right topics!
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Knud Jahnke @knudjahnke.bsky.social · 05/09/2026
Das Trump-Playbook.
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Knud Jahnke @knudjahnke.bsky.social · 05/09/2026
But ... why?
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Knud Jahnke @knudjahnke.bsky.social · 05/09/2026
I just asked the MPIA library to order it :-)
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Knud Jahnke @knudjahnke.bsky.social · 04/09/2026
Welcome! It looked strange from the get-go.
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Knud Jahnke @knudjahnke.bsky.social · 03/09/2026
@benneholwerda.bsky.social Did you just start a new profile on Mastodon? "bennwh" started following me and many other astronomers. Real? Fake?
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Knud Jahnke @knudjahnke.bsky.social · 14/08/2026
Ja, das stimmt, aber wir alle nutzen fossile Energien. Auch wenn wir es anders wollten. Damit sind wir zumindest emotional Teil des Problems, beim Haus halt nicht. Ich glaube das macht den Wandel so vertrackt. Und der Lobbyismus...
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Knud Jahnke @knudjahnke.bsky.social · 14/08/2026
Das Problem ist, dass 99,9% aller Leute nicht am Einsturz des Bürgerhauses beteiligt waren, an der Klimakrise schon. Da ist es einfacher, gerechte Wut über den Einsturz zu haben und Konsequenzen zu fordern. Für Andere halt.
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Knud Jahnke @knudjahnke.bsky.social · 09/08/2026
Und nachgeschaut: ist eine Bremer Firma, das erklärt es ...
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Knud Jahnke @knudjahnke.bsky.social · 09/08/2026
Es gibt Sachen, die müssen nicht.
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Astronomer Royal for Scotland | Catherine Heymans @astroroyalscot.bsky.social · 08/08/2026
Met office cloud cover forecast for the partial #eclipse 12th Aug 😠 Still time for the weather Gods to change their minds, but if not it'll be a case of all the Northerners heading South for a day trip to Swansea. 🔭
A map of the UK with cloud cover for 19:00 on the 12th August.  All of Ireland and Scotland are covered in cloud.  The word BOO has been annotated over the clouds
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Annika Brockschmidt @ardenthistorian.bsky.social · 08/08/2026
Der Bundesverkehrsminister (und diese Regierung) scheinen einen einzigen Plan zu verfolgen: auf Zeit spielen, bis der Sommer vorbei ist, in der Annahme, dass die Leute dann die Hitzetoten, Waldbrände, vertrocknenden Flüsse vergessen, damit man weiter so tun kann, als sei das nur „Wetter“.
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