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petschge

@longdouble.bsky.social

Plasma physics, mostly via kinetic simulations on supercomputers. I occasionally (but not actually every day) post a "Paper of the Day" #potd that may or may not be related to my work.

361 Followers  |  215 Following  |  40 Posts  |  Joined: 18.10.2023  |  2.2684

Latest posts by longdouble.bsky.social on Bluesky

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Trump to direct Pentagon to buy coal to revive industry, Bloomberg News says U.S. President Donald Trump is set to direct the Pentagon to use government funding and Pentagon contracts to sustain U.S. coal-fired power plants, Bloomberg News reported on Tuesday, citing a White House official.

Trump to direct Pentagon to buy coal to revive industry, Bloomberg News says reut.rs/46vkQiO

11.02.2026 03:01 โ€” ๐Ÿ‘ 216    ๐Ÿ” 123    ๐Ÿ’ฌ 132    ๐Ÿ“Œ 293
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Google sent personal and financial information of student journalist to ICE | TechCrunch The tech giant handed over the personal information of a journalist and student who attended a pro-Palestinian protest in 2024. This is the latest example of ICE using its controversial subpoena power...

More reports of Gmail turning over email content to ICE are coming out now.
techcrunch.com/2026/02/10/g...

11.02.2026 03:46 โ€” ๐Ÿ‘ 126    ๐Ÿ” 102    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 10

Very similar to the number of COVID deaths in 2020, which is staggering!

10.02.2026 21:28 โ€” ๐Ÿ‘ 29    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Dozens of researchers will move to France from US following high-profile bid to lure talent Large proportion worked at Columbia University, which had its grants cut and frozen by the administration of US President Donald Trump.

Dozens of researchers will move to France from US following high-profile bid to lure talent. Large proportion worked at Columbia University, which had its grants cut and frozen by the administration of US President Donald Trump. www.nature.com/articles/d41...

10.02.2026 17:27 โ€” ๐Ÿ‘ 415    ๐Ÿ” 208    ๐Ÿ’ฌ 17    ๐Ÿ“Œ 34

One of every thousand American residents has been taken into custody by ICE in the last year.

10.02.2026 21:11 โ€” ๐Ÿ‘ 5090    ๐Ÿ” 2432    ๐Ÿ’ฌ 38    ๐Ÿ“Œ 45
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Bridge Owner Lobbied Administration Before Trump Blasted Competing Span to Canada

Aaand there you go: Trumpโ€™s sudden about-face on the most important Canada-US border crossing came after meeting with the billionaire family that owns the rival bridge. Nice scoop, confirming suspicions of everyone who has followed this file and is familiar with Trump www.nytimes.com/2026/02/10/w...

10.02.2026 22:35 โ€” ๐Ÿ‘ 586    ๐Ÿ” 264    ๐Ÿ’ฌ 16    ๐Ÿ“Œ 44

Friends from Minneapolis reporting to me that things are at the point where folks are being hidden in other people's houses and we are in the "again" part of "never again" which the "never" was supposed to preclude

10.02.2026 22:54 โ€” ๐Ÿ‘ 19533    ๐Ÿ” 7193    ๐Ÿ’ฌ 48    ๐Ÿ“Œ 266
Comic. [Person with ponytail pointing to diagram on wall as she talks to two other people, one with short hair.] PERSON 1: The high carbon content of the skeleton indicates that the individual lived less than 12.6 billion years ago, after the first round of stellar nucleosynthesis. [caption] Cosmologist carbon dating

Comic. [Person with ponytail pointing to diagram on wall as she talks to two other people, one with short hair.] PERSON 1: The high carbon content of the skeleton indicates that the individual lived less than 12.6 billion years ago, after the first round of stellar nucleosynthesis. [caption] Cosmologist carbon dating

Carbon Dating

xkcd.com/3205/

10.02.2026 19:43 โ€” ๐Ÿ‘ 2379    ๐Ÿ” 236    ๐Ÿ’ฌ 26    ๐Ÿ“Œ 12

Lord Kelvin?

10.02.2026 20:27 โ€” ๐Ÿ‘ 12    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

	Please use the sharing tools found via the share button at the top or side of articles. Copying articles to share with others is a breach of FT.com T&Cs and Copyright Policy. Email licensing@ft.com to buy additional rights. Subscribers may share up to 10 or 20 articles per month using the gift article service. More information can be found at https://help.ft.com/faq/gifting-and-sharing-an-article/what-is-a-gift-article/.
	https://www.ft.com/content/a5cf86ec-47cb-448f-b4a3-56ca6390ad8e

	Elon Musk is betting that AIโ€™s future lies not on Earth, but in orbit โ€” a claim he has put at the centre of his $1.25tn plan to merge SpaceX with his lossmaking start-up xAI.

The tech billionaire, who aims to launch an initial public offering for the newly combined company this year, argues that vast fleets of satellites powered by solar energy and cooled by the vacuum of space will become the cheapest way to generate AI computing power. Musk believes this will happen within the next three years.

Please use the sharing tools found via the share button at the top or side of articles. Copying articles to share with others is a breach of FT.com T&Cs and Copyright Policy. Email licensing@ft.com to buy additional rights. Subscribers may share up to 10 or 20 articles per month using the gift article service. More information can be found at https://help.ft.com/faq/gifting-and-sharing-an-article/what-is-a-gift-article/. https://www.ft.com/content/a5cf86ec-47cb-448f-b4a3-56ca6390ad8e Elon Musk is betting that AIโ€™s future lies not on Earth, but in orbit โ€” a claim he has put at the centre of his $1.25tn plan to merge SpaceX with his lossmaking start-up xAI. The tech billionaire, who aims to launch an initial public offering for the newly combined company this year, argues that vast fleets of satellites powered by solar energy and cooled by the vacuum of space will become the cheapest way to generate AI computing power. Musk believes this will happen within the next three years.

This would have been a good point for someone to have asked, is that really how things work? Or is vacuum in fact an excellent insulator? www.ft.com/content/a5cf...

10.02.2026 13:24 โ€” ๐Ÿ‘ 897    ๐Ÿ” 183    ๐Ÿ’ฌ 62    ๐Ÿ“Œ 135

"cooled by the vacuum of space" - huh, neat. hey does anyone know how thermoses work

10.02.2026 20:14 โ€” ๐Ÿ‘ 943    ๐Ÿ” 230    ๐Ÿ’ฌ 28    ๐Ÿ“Œ 11
Two bison walking or in this case running traffic in the road. Bison love to stand in front of cars, sometimes walk in front of cars and in this case, run in front of cars. In any case its pacing traffic and here we see two bison galloping along with a very long line of cars behind them.

Two bison walking or in this case running traffic in the road. Bison love to stand in front of cars, sometimes walk in front of cars and in this case, run in front of cars. In any case its pacing traffic and here we see two bison galloping along with a very long line of cars behind them.

Good afternoon from @altyellonatpark.org

Traffic Yellowstone style

10.02.2026 17:25 โ€” ๐Ÿ‘ 264    ๐Ÿ” 33    ๐Ÿ’ฌ 3    ๐Ÿ“Œ 1

This is starting to get like universal basic income where every single objective study shows the same result but the people who don't like that result go "uh, well there's just really no way to know"

10.02.2026 15:06 โ€” ๐Ÿ‘ 4730    ๐Ÿ” 2056    ๐Ÿ’ฌ 5    ๐Ÿ“Œ 12

Did you know that the Works Progress Administration employed mathematicians, physicists, and engineers? One of those projects produced the common (beloved?) reference book "Handbook of Mathematical Functions" by Abramowitz (sort of) and Stegun (primarily)! ๐Ÿงช โš›๏ธ ๐Ÿ‘ฉโ€๐Ÿ”ฌ ๐Ÿงฎ

10.02.2026 18:27 โ€” ๐Ÿ‘ 130    ๐Ÿ” 39    ๐Ÿ’ฌ 5    ๐Ÿ“Œ 2
Research Scientist/Engineer 2 (E S UAW Research) Job Description The University of Washington (UW) Astronomy Department has an outstanding opportunity for a researcher who will have responsibilities in the design, development, construction, and test...

Hey y'all. I'm hiring. Are you interested in building instruments for astrophysics?

wd5.myworkdaysite.com/recruiting/u...

09.02.2026 19:51 โ€” ๐Ÿ‘ 117    ๐Ÿ” 85    ๐Ÿ’ฌ 9    ๐Ÿ“Œ 7
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"It does not matter who votes, but who counts the votes." ---Stalin

09.02.2026 17:25 โ€” ๐Ÿ‘ 4290    ๐Ÿ” 1723    ๐Ÿ’ฌ 97    ๐Ÿ“Œ 61
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UK government proposes 30% budget cut to astronomy and physics research: 'It's pretty disastrous' "You can't have a cut of that scale and not expect to see a massive impact."

"UK government proposes 30% budget cut to astronomy and physics research: 'It's pretty disastrous'" www.space.com/astronomy/uk... ๐Ÿ”ญ๐Ÿงช

10.02.2026 08:30 โ€” ๐Ÿ‘ 35    ๐Ÿ” 25    ๐Ÿ’ฌ 3    ๐Ÿ“Œ 1
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Bund zahlt in einem Jahr 500 Millionen Euro fรผr Microsoft-Lizenzen Die Ausgaben des Bundes fรผr Microsoft-Lizenzen steigen rasant. Eine Analyse verweist auf die Risiken der digitalen Abhรคngigkeit.

Digitale Souverรคnitรคt bleibt bloรŸe Rhetorik. Und mit der โ€žKIโ€œ-Integration erleben wir schon den nรคchsten Pfad in die Abhรคngigkeit www.heise.de/hintergrund/...

10.02.2026 09:24 โ€” ๐Ÿ‘ 74    ๐Ÿ” 32    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 1
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Reform is threatening Bangor University over a student societyโ€™s decision. The society isnโ€™t Bangor Universityโ€”but this is a neat preview of how a Reform government would work: public money for supporters only. Trump-style politics, UK edition.

Authoritarian reflex is already working just fine.๐Ÿ‘‡

10.02.2026 09:32 โ€” ๐Ÿ‘ 211    ๐Ÿ” 108    ๐Ÿ’ฌ 15    ๐Ÿ“Œ 27

Russia's tech regulator Roskomnadzor has begun throttling Telegram, citing the messenger app's "failure to comply with Russian law." The move is the part of an ongoing effort to push Russians away from non-state-controlled apps (incl. WhatsApp) and onto Messenger Max.
www.interfax.ru/digital/1072...

10.02.2026 13:13 โ€” ๐Ÿ‘ 7    ๐Ÿ” 3    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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Easterhegg 2026 โ€“ Tickets, Merch und mehr TL;DR: Ein neues Jahr โ€“ eine neue Easterhegg. Dieses Jahr findet sie an der Universitรคt Koblenz vom 3. bis zum 6. April statt. Das Motto der Easterhegg dieses Jahr ist โ€žThe Bunny is a Lie!โ€œ. Call forโ€ฆ

Ein neues Jahr โ€“ eine neue Easterhegg: Dieses Jahr an der Universitรคt #Koblenz vom 3. bis 6. April. Der Ticketvorverkauf findet an drei Terminen ab 12. Februar statt. Es wird Merch geben! events.ccc.de/2026/02/09/e...

09.02.2026 21:43 โ€” ๐Ÿ‘ 29    ๐Ÿ” 15    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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On the Deepest Search for Galactic Center Pulsars and an Examination of an Intriguing Millisecond Pulsar Candidate On the Deepest Search for Galactic Center Pulsars and an Examination of an Intriguing Millisecond Pulsar Candidate, Perez, Karen I., Gajjar, Vishal, Bogdanov, Slavko, Halpern, Jules P., Demorest, Paul B., Croft, Steve, Lebofsky, Matt, MacMahon, David H. E., Siemion, Andrew P. V.

It was detected in X-band (8-12 GHz). Hereโ€™s the paper: iopscience.iop.org/article/10.3...

09.02.2026 21:48 โ€” ๐Ÿ‘ 3    ๐Ÿ” 1    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 1
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Technik Workshop fรผr Jugendliche zwischen 12 und 17 Jahren Technikbegeisterte Jugendliche testen beim Jung-Hacker*innen-Tag in Flensburg 3D-Druck, Elektronik und Robotik โ€“ was wird in der Werkstatt mรถglich?

Technik-Workshop fรผr Jugendliche zwischen 12 und 17 Jahren: Jugendangebot des CCC #Flensburg am 15. Februar ab 13 Uhr www.shz.de/lokales/wir-...

09.02.2026 22:11 โ€” ๐Ÿ‘ 63    ๐Ÿ” 23    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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Bluesky Map Interactive map of 3.4 million Bluesky users, visualised by their follower pattern.

I made a map of 3.4 million Bluesky users - see if you can find yourself!

bluesky-map.theo.io

I've seen some similar projects, but IMO this seems to better capture some of the fine-grained detail

08.02.2026 22:59 โ€” ๐Ÿ‘ 6800    ๐Ÿ” 2057    ๐Ÿ’ฌ 628    ๐Ÿ“Œ 4489
When the researchers tested the LLMs without involving users by providing the models with the full text of each clinical scenario, the models correctly identified conditions in 94.9 percent of cases. But when talking to the participants about those same conditions, the LLMs identified relevant conditions in fewer than 34.5 percent of cases. People didnโ€™t know what information the chatbots needed, and in some scenarios, the chatbots provided multiple diagnoses and courses of action. Knowing what questions to ask a patient and what information might be withheld or missing during an examination are nuanced skills that make great human physicians; based on this study, chatbots canโ€™t reliably replicate that kind of care.

In some cases, the chatbots also generated information that was just wrong or incomplete, including focusing on elements of the participantsโ€™ inputs that were irrelevant, giving a partial US phone number to call, or suggesting they call the Australian emergency number.

When the researchers tested the LLMs without involving users by providing the models with the full text of each clinical scenario, the models correctly identified conditions in 94.9 percent of cases. But when talking to the participants about those same conditions, the LLMs identified relevant conditions in fewer than 34.5 percent of cases. People didnโ€™t know what information the chatbots needed, and in some scenarios, the chatbots provided multiple diagnoses and courses of action. Knowing what questions to ask a patient and what information might be withheld or missing during an examination are nuanced skills that make great human physicians; based on this study, chatbots canโ€™t reliably replicate that kind of care. In some cases, the chatbots also generated information that was just wrong or incomplete, including focusing on elements of the participantsโ€™ inputs that were irrelevant, giving a partial US phone number to call, or suggesting they call the Australian emergency number.

people often don't know what's relevant to doctors, and a good doctor's job is to know what follow up questions to ask to get to a correct diagnosis and course of action. chatbots just can't do that www.404media.co/chatbots-hea...

09.02.2026 16:26 โ€” ๐Ÿ‘ 154    ๐Ÿ” 28    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 4
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This guy was spotted in northwest Albuquerque
New Mexico

09.02.2026 16:17 โ€” ๐Ÿ‘ 20    ๐Ÿ” 2    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 1

Since the early days of the space program, astronauts have quarantined before missions because any illness could be disastrous. Itโ€™s eminently logical โ€” not โ€œextremeโ€ โ€” for athletes whoโ€™ve trained their WHOLE LIVES for one event to take similar precautions in order to stay in peak physical condition

09.02.2026 16:38 โ€” ๐Ÿ‘ 2378    ๐Ÿ” 407    ๐Ÿ’ฌ 54    ๐Ÿ“Œ 12

You can't say "SpaceX dropped its Mars plans" because SpaceX never had "plans" for Mars. They had a sales pitch.

There was never any indication that anyone inside SpaceX seriously worked on a Mars mission other than on power point slides.

And no, Starship as such does not count.

09.02.2026 12:59 โ€” ๐Ÿ‘ 29    ๐Ÿ” 18    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 2
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โ€˜Absolute hellโ€™: Irish man with valid US work permit held by Ice since September Seamus Culleton has been in a detention facility in Texas for nearly five months despite having no criminal record

Kerryman who is married, living and working legally in the United States for >20 years has been incarcerated by US Immigration and Customs Enforcement (Ice) since September 2025.

Profoundly disturbing report by Karlin Lillington @klillington.bsky.social
www.irishtimes.com/world/us/202...

09.02.2026 06:36 โ€” ๐Ÿ‘ 1411    ๐Ÿ” 723    ๐Ÿ’ฌ 51    ๐Ÿ“Œ 77

*Green card application in process and work permit, married to US citizen
*Lived in US for 20 years, no criminal record
*In detention for five months with no charge, despite judge approving release
*He disputes ICE claim that he signed forms agreeing to deportation

09.02.2026 12:29 โ€” ๐Ÿ‘ 6549    ๐Ÿ” 2797    ๐Ÿ’ฌ 121    ๐Ÿ“Œ 126

@longdouble is following 20 prominent accounts