Last Tuesday, I went to the hospital with a dinosaur to get an MRI... Working in a natural history museum allows you to say the weirdest things! ☺️🦕🏛️

That is an interesting idea: if the solar system's initial 26Al inventory was produced by cosmic-rays (from a ~1 pc supernova (SN); as opposed to being actual SN debris), you'd expect cosmic-ray effects in other elements too (e.g., Ne - and we see that, occasionally!), and perhaps a conc. gradient?

🌌Il y a 19 ans, Hubble capturait cette image de l'amas d'étoiles Pismis 24 et de la nébuleuse NGC 6357. Ils sont situés à 8000 années-lumière de la Terre. Depuis, le JWST a, lui aussi, tourné son immense miroir vers cette partie du ciel. 📷ESA / NASA

Morf and Helled, open source

The historic raise for Science agreed at #CM25 secures the Programme € 3787 million for the next five years. Discover what we're planning to do with this increased budget, which is equivalent to about € 1.70 per European citizen per year 👉 www.esa.int/Science_Expl... 🔭 🧪 @cmundell.esa.int

My answers in English in an interview for a German newspaper (online version will be published a little later): - I think Trump's initiative demonstrates the absolute inadequacy of his administration's expertise on modern Russia: they fundamentally don't understand what they're dealing with. 1/8

In case someone forgot. "Territorial integrity" including, explicitly, Crimea.

When I was a post-doc at Lund University, we submitted a project to search sediments for grains from Beta Pictoris. Assuming they had the same content of radioactive Manganese-53 as early solar system materials, we wanted to find them by combining sophisticated decay counting and NanoSIMS. But...

Who had that on their 2025 bingo card?

You requested it, now it’s here - introducing Proton Sheets! The privacy-first alternative to Excel and Google Sheets. Spreadsheets form the framework of modern businesses, and with Proton Sheets, you can ensure your data is private and secure. 1/4

By 2040, ~40% of the images from Hubble Space Telescope, and more than 96% from new and future space telescopes like SPHEREx, ARRAKIHS, and Xuntian will be contaminated by internet satellite constellations. Read our new NASA article in Nature: nature.com/articles/s4158…

I find this thought fascinating: Greg & Wiegert (arxiv) determine the fluxes of material from nearby debris disks, e.g. Beta Pictoris and Ran (+ 18 others). Unlike for solar system meteoroids/meteorites, the origin of such bodies would always be knowable from their dynamics. Just need to catch them!

This is cool, even if it is tentative. Ground support for the "progressive disruption and re-accretion of martian moons" hypothesis. This hypothesis alleviates the strange coincidence that we would live so close (~30-50 Ma) to the end of Phobos' lifetime - not a problem if it's just a cycle.

The natural state of capitalism is "trickle-up". The only way to counter the "trickle-up" is taxes.

Das Propaganda-Märchen, das Gasche hier wieder verbreitet ist längst widerlegt. Und apropos "Hätte, hätte, Fahrradkette!" Die NATO ist nicht der Grund dafür, dass Russland die Ukraine angreift, aber vermutlich der Grund dafür, dass Russalnd nicht längst die baltischen Staaten angegriffen hat.

The brave Ukrainians, the front-line defenders of peace and stability in Europe, are still in need of our support. I just donated 100 USD to UNITED24, again. If you can, join me! 🇺🇦 🇺🇦 🇺🇦

Hey #planetSci friends, the end of the year is nearing. Does anyone want to help me put together an Image of the Year Bracket? If you want to propose your favourite planetary science image of 2025, place it below with a link to the source and when it was published.

Excellent essay. Should you use AI (as a student, or later) if you could "get away with it"? What might the long-term consequences be, for you - and society?

We can do away with it without a new Supreme Court. Nor do we need a constitutional amendment. There’s a far simpler way to get rid of Citizens United. Let me explain. https://robertreich.substack.com/p/how-to-get-rid-of-citizens-united

That's just about the only peace plan worth talking about. Europe should set it as default.

Please don't eat me Mr. (?) Snake Eagle, I am no reptile... Snake Eagles, thanks to climate change, are now breeding in Switzerland too...

Journalist challenge: Use “Machine Learning” when you mean machine learning and “LLM” when you mean LLM. Ditch “AI” as a catch-all term, it’s not useful for readers and it helps companies trying to confuse the public by obscuring the roles played by different technologies. 🧪

I have a simple, 1-point peace plan: Russia stops all attacks and gets the fuck out of Ukraine, immediately. 🇺🇦🇺🇦🇺🇦 #slavaukraini

@kapteynastro.bsky.social of @rug.nl invites applications for in total 7 PhD and 4 ERC-funded postdoc positions in our annual call. ⭐🔭 PhD positions: aas.org/jobregister/... Postdoctoral positions: aas.org/jobregister/... #exoplanet #astronomy #geoscience 🧪🔭⭐ [Image credit: Mark A. Garlick.]

Interesting and important new isotope constraints on the origin of Theia, i.e. the Giant Impactor which collided with the proto-Earth to create the Moon. And the authors come to same conclusion that we came to 11 years ago! 😉 (see linked publication)

Kipping et al. (arxiv, submitted) observe the Jupiter-like (in size, instellation) exoplanet Kepler-167e with JWST in transit, to search for exomoons. They might see a large, close-in moon, but cannot exclude other explanations. The next transit opportunity is in October 2027.

3 years ago, NASA crashed the DART spacecraft into an asteroid at 22,000 kilometers per hour. The event changed the asteroid's orbit and tilt & sent it tumbling. A nearby cubesat captured these remarkable images of the asteroid immediately after the impact. 🧪🔭 aasnova.org/2025/11/03/s...

Proton Mail is an appealing alternative to Gmail, Outlook, and Apple Mail. It also comes with advanced privacy and productivity features, including a way to manage newsletter overload. www.wired.com/story/4-tips...

Zum ChatGPT-"Interview" in der Sonntagszeitung. Es hat mich unglaublich fest aufgeregt. Vielleicht merkt man es. Ich poste aus Platzgründen meinen Rant von Linkdin als Screenshot. Zum "Interview" (Paywall): www.tagesanzeiger.ch/hey-chatgpt-...

Greenhouse gas data is finally rolling in again, and my dashboard is back up-to-date. Unfortunately, the story hasn’t changed... 📈 More climate change indicator graphics at zacklabe.com/climate-chan...

I guess if your trade policy can be brought down by a 1 kg bar of gold, it deserves to be brought down by a 1 kg bar of gold...

Resolving this took me 2 hours, and my New York colleague at least one hour. Scale that up to all museum records and that's why there isn't more available digitally. Support museum folks. Cite the collections data.

Did you know you can search the Meteoritical Bulletin Database for meteorites found on Mars (i.e., *not* martian meteorites, but meteorites found by rovers on the surface of Mars)? For the Moon, too. Here's the link for Mars:

World's most contagious falsehoods See all 70 bit.ly/IIB-Mythconc... data & sources bit.ly/KIB_Mythconception

Only 365 times further to go for the first light year...

⚡️Solar storm incoming! We are actively monitoring severe space weather events, occurring on 11-12 November. Severely disturbed geomagnetic conditions are expected to persist for at least 24 to 48 hours. 🔗 www.esa.int/Space_Safety... @operations.esa.int @science.esa.int

Geht's eigentlich noch? Wenn schon, dann umgekehrt.

Ooooops indeed.

The Natural History Museum of St. Gallen has now officially become an Anomalocaris hunting ground! 👀😊🤘🌍

New Publication at the Open Journal of Astrophysics: "A substellar flyby that shaped the orbits of the giant planets" by Garett Brown (U. Toronto at Scarborough, Canada), Renu Malhotra (U. Arizona, USA) and Hanno Rein (U. Toronto at Scarborough, Canada) doi.org/10.33232/001...

An Introduction to Mars Terraforming, 2025 Workshop Summary arxiv.org/abs/2510.07344

Delbo et al. (accepted): There are more A-type (=olivine rich, supposedly rare) asteroids in the belt than we ever realized. That reminds me of a poster I once saw at LPSC, the title of which has lived rent-free in my head ever since: "All about A-type asteroid Aeternitas"... 😊

MeteoSwiss, ETH Zurich, and C2SM present the new Swiss climate scenarios. These show how the Swiss climate will change if the global average temperature rises by 3 degrees. ethz.ch/en/news-and-... @meteoschweiz.ch, @usyseth.bsky.social #klimaszenarien #meteoschweiz #ETH #C2SM #NCCS

Weldon et al. (arxiv): Adding tidal mass loss of Hot Jupiters during the high eccentricity phase of their orbital evolution into the mix can make predicted and observed occurrence rates (ca. 0.5% of FGK stars) match. 🪐

Last chance to turn it off. On Monday, November 3rd, Microsoft will start using your LinkedIn data for AI training. And remember, you're opted in by default. To toggle it off 👉 Account - Settings & Privacy > Data privacy > Data for Generative AI Improvement.

💥 💥 BREAKING: Der Schweizer Armeechef Thomas Süssli will kein Microsoft. 💥 💥 Süssli fordert: ➡️ eine Exitstrategie aus Microsoft: ➡️ eine IT-Infrastruktur für sensitive Daten ➡️ eine Schweizer Open-Source-Lösung. (und OpenDesk von ZenDis😉) Read the full story ⬇️ www.republik.ch/2025/10/31/d...

Python was awarded a funding grant, funding grant asked Python foundation to remove all diversity and inclusion initiatives they have. Python foundation said no and rejected the grant. If you use Python, send a few dollars to the charity to keep it going. I’m pushing a dono on behalf of ScamGuard.

🧪🧵 Future change to #ThwaitesGlacier, Antarctica constitutes the largest uncertainty in #sea-level rise forecasts. The Science Coordination Office of the International Thwaites Glacier Collaboration recently issued a briefing document summarising some key findings - thwaitesglacier.org/findings

When it comes to famous holes in the ground, northern Arizona has two: the #GrandCanyon and #MeteorCrater. New research suggests that these famous depressions might, in fact, be linked.