Reposted by Oliver Hahn 🇪🇺Astronomer Royal for Scotland | Catherine Heymans @astroroyalscot.bsky.social · 01/07/2026At today's UKRI board meeting, the fate of UK particle physics and astronomy will likely be decided. Have we done enough to convince the powers-that-be to halt the proposed funding cuts? 🤞 Read Prof. Hiranya Peiris in Nature today eloquently explaining why these cuts are wrong.🧪🔭⚛️ 📖: rdcu.be/friwM 520375
Reposted by Oliver Hahn 🇪🇺Richard Easther @rjme.bsky.social · 01/07/2026Piece on the UK's mistakes in science funding, which parallel the disaster we have made for ourselves in New Zealand. (Written by the awesome Hiranya Peiris) www.nature.com/articles/s42...nature.comDiscovery is not the opposite of application - Nature Reviews PhysicsRestructuring research funding as a choice between discovery and application gets the economics wrong, the evidence wrong and the people wrong. 1248
Reposted by Oliver Hahn 🇪🇺Universität Wien / University of Vienna @univie.ac.at · 18/06/2026📣 Event tip: Data Science + AI Day 2026 „Advancing Artificial Intelligence We Can Trust and Understand" 🔬 @ds-vienna.bsky.social invites to an #AI showcase on June 22 — panels & keynotes highlighting how Vienna's university researchers are advancing interpretable AI systems we can trust. 🔍 More: ⤵️datascience.univie.ac.atData Science & AI Day 2026Data Science & AI Day 2026 082
Reposted by Oliver Hahn 🇪🇺Denis Erkal @derkal.bsky.social · 10/06/2026The Arrakihs mission has been adopted as ESA's next F-class mission, with an expected launch in 2030! It will look at the low surface brightness outskirts of 80 Milky Way-like galaxies. www.esa.int/Science_Expl...esa.intESA adopts galactic archaeology mission ArrakihsThe European Space Agency’s (ESA) Science Programme Committee has adopted the Arrakihs mission. Planned for launch by the end of 2030, Arrakihs will capture the faint light from nearby galaxy haloes. ... 14814
Reposted by Oliver Hahn 🇪🇺Julia Partheymüller @schnizzl.bsky.social · 22/05/2026Alle Demos nächste Woche: Wien: Mi, 27.05., 13 Uhr, Uni Wien Linz: Do, 28.05., 16 Uhr, Hauptplatz Graz: Do, 28.05., 14 Uhr, Wilhelm Fischer Allee Salzburg: Do, 28.05., 14 Uhr, Kapitelplatz Klagenfurt: Do, 28.05., 10 Uhr, Uni-Vorplatz www.oeh.ac.at/info/unisret... #UnisRetten @nuwiss.bsky.socialoeh.ac.atSparkurs stoppen - #UnisRetten! - Österreichische Hochschüler_innenschaft (ÖH)Milliardenkürzungen bei den Unis? Nicht mit uns! Gemeinsam mit den Universitäten gehen wir als Studierendenvertreter_innen auf die Straße. 03125
Reposted by Oliver Hahn 🇪🇺Emily Hunt @emily.space · 20/05/2026The Austrian government has proposed hitting universities with an €800 million / year budget cut (after inflation). This could lead to redundancies for up to 20% of staff. 🫠 Quite ironic after the last year of advertising Austria as a "safe haven" for researchers impacted by Trump.derstandard.atEine Milliarde weniger Budget: Unis drohen der Regierung und sagen ihr den Kampf anKommenden Mittwoch wollen die Rektorinnen und Rektoren am Ring demonstrieren. Aus Protest steigen sie auch aus dem Hochschulstrategieprozess des Wissenschaftsressorts aus 36432
Reposted by Oliver Hahn 🇪🇺Julia Partheymüller @schnizzl.bsky.social · 17/05/2026🧵1/13 Morgen startet Pint of Science – das Wissenschaftsfestival! 🧠🔬 Vom 18.–20. Mai gibt es in Wien 30 Events an 11 Locations – Forschung zum Zuhören, Fragenstellen & Mitdiskutieren! Ein Überblick über das Programm im Thread. 👇 🎟 pintofscience.at/events/wien/ #pint26 #pint26AT 195
Reposted by Oliver Hahn 🇪🇺Ethan Siegel @startswithabang.bsky.social · 11/05/2026A brief history of the cosmic distance record The cosmic distance record has grown, in just a few hundred years, from millions of light-years to over 30 billion light-years. Here's a look back at our history of ever-receding horizons. bigthink.com/starts-with-... #space #astro #physics #telescopebigthink.comA brief history of the cosmic distance recordOnly nearby objects appear to the naked eye. With telescopes of all types, especially in space, we've smashed those records many times over. 1145
Reposted by Oliver Hahn 🇪🇺Ethan Siegel @startswithabang.bsky.social · 21/04/2026Dark matter passes a new cosmic test, while MOND fails A new cosmic test has finally, with CMB and large-scale structure data, become realistic: using the kinetic Sunyaev-Zel'dovich effect to test dark matter vs. MOND. Guess who wins? bigthink.com/starts-with-... #space #astro #darkmatter #MONDbigthink.comDark matter passes a new cosmic test, while MOND failsOn cosmic scales, only dark matter (or something equivalent) gives us the Universe we observe. Now, the Sunyaev-Zel'dovich effect agrees. 24411
Oliver Hahn 🇪🇺 @cosmohahn.bsky.social · 15/04/2026Very excited to be part of this year's #PintOfScience festival in Vienna (May 18-20). Many interesting topics and fun opportunities to chat about science pintofscience.atpintofscience.atPint of Science ATBringing researchers to your local bar or cafe to share the latest happenings in the world of science. 060
Reposted by Oliver Hahn 🇪🇺McSweeney's @mcsweeneys.net · 05/04/2026"By week one, I was already tired of his anti-rich, pro-Samaritan bullshit. I wanted to take a course in Christianity, not liberalism."buff.lySelected Negative Teaching Evaluations of Jesus ChristOur 4th most-read article of 2022. CALENDAR 2027 3/31/24 4/13/25 4/5/26 81017316
Oliver Hahn 🇪🇺 @cosmohahn.bsky.social · 02/04/2026Just realising that @johncarlosbaez.bsky.social 's classic crackpot index criterion #15 might need an update. AI readily solves this little obstacle: "I'm not good at math, but my theory is conceptually right, so all I need is for someone to express it in terms of equations". 151
Reposted by Oliver Hahn 🇪🇺Romston @romston.bsky.social · 01/04/2026🦈 Rare picture of a shark stepping on a Lego. #MadeMeSmile 🤭 1554244651
Reposted by Oliver Hahn 🇪🇺John Bistline @bistline.bsky.social · 01/04/2026This is my favorite climate change chart. Japanese monks, aristocrats, and emperors kept meticulous records of cherry blossom festivals for 1,200 years and accidentally built the world's longest climate dataset. 168183456900
Reposted by Oliver Hahn 🇪🇺Ethan Siegel @startswithabang.bsky.social · 01/04/2026The flimsy case for evolving dark energy There's been a lot of talk about evolving dark energy, and how DESI data demands it. But the case for this remains somewhat weak, while the true underlying puzzles remain unsolved. bigthink.com/starts-with-... #physics #astro #space #darkenergybigthink.comThe flimsy case for evolving dark energyIs dark energy evolving with at least 99.99% confidence? Despite the quality of recent data, scientists have every reason to be skeptical. 0173
Reposted by Oliver Hahn 🇪🇺Claire Lamman @clairelamman.bsky.social · 27/03/2026So happy to finally share this: I made a long-form comic about Hawking radiation for Physics Today! Although it's a short read, I hope it sucks you in ;) physicstoday.aip.org/features/bla...physicstoday.aip.orgBlack holes aren’t blackA half century after the discovery of Hawking radiation, we are still dealing with the quantum puzzle it exposed. 1226685
Reposted by Oliver Hahn 🇪🇺Emanuel Maiberg @emanuelmaiberg.bsky.social · 26/03/2026after much deliberation and giving AI the benefit of the doubt, Wikipedia editors have had enough of AI slop. New policy bans LLM generated content, periodt www.404media.co/wikipedia-ba...404media.coWikipedia Bans AI-Generated Content“In recent months, more and more administrative reports centered on LLM-related issues, and editors were being overwhelmed.” 10982812298
Reposted by Oliver Hahn 🇪🇺David Ho @davidho.bsky.social · 25/03/2026Not so marvelous news. ~95,000 scientists have left the federal government since the Trump regime took over.nytimes.comProminent Climate Scientist Resigns From NASA, Citing Trump’s Attack on Science 2131221248
Reposted by Oliver Hahn 🇪🇺Space Telescope Science Institute @stsci.edu · 23/03/2026Watch as the Crab Nebula changes over time with Hubble. Two images, taken 25 years apart, show the ongoing expansion of a supernova remnant: news.stsci.edu/4bAN6m4 🔭 18231
Reposted by Oliver Hahn 🇪🇺Jo Wolff @jowolff.bsky.social · 23/03/2026Christ on an electric bike. Trump Administration to Pay $1 Billion to Energy Giant to Cancel Wind Farms www.nytimes.com/2026/03/23/c...nytimes.comTrump Administration to Pay $1 Billion to Energy Giant to Cancel Wind Farms 137038
Reposted by Oliver Hahn 🇪🇺Peter Coles 🏳️🌈 🏳️⚧️ 🇮🇪 @telescoper.bsky.social · 06/03/2026Good move! www.cnrs.fr/en/update/cn...cnrs.frThe CNRS is breaking free from the Web of ScienceFrom January 1st 2026, the CNRS will cut access to one of the largest commercial bibliometric databases, Clarivate Analytics' 193
Reposted by Oliver Hahn 🇪🇺NSF–DOE Rubin Observatory @rubinobservatory.org · 25/02/2026The largest spot-the-difference effort EVER has begun!🚨 On the night of Feb 24, NSF–DOE Rubin Observatory officially released its first ~800,000 public alerts of detected changes in the night sky!🔍 A new era of discovery is here✨ 🔭🧪☄️ 🔗: rubinobservatory.org/news/first-a... 418870
Reposted by Oliver Hahn 🇪🇺LIGO Scientific Collaboration @ligo.org · 11/02/2026What has happened in the 10 years since #GW150914? @space.com picks their top 10 discoveries. What are yours? www.space.com/astronomy/li... by @robleascijorno.bsky.social #GW10Years 🔭 ⚛️ 🧪 1135
Reposted by Oliver Hahn 🇪🇺Peter Suber @petersuber.bsky.social · 11/02/2026A review of the proceedings from four major computer-science conferences showed that none from 2021, and all from 2025, had fake citations. arxiv.org/abs/2602.058... #AI #LLMs #Hallucinations #Misconduct #ScholCommarxiv.orgThe Case of the Mysterious CitationsMysterious citations are routinely appearing in peer-reviewed publications throughout the scientific community. In this paper, we developed an automated pipeline and examine the proceedings of four ma... 010258
Reposted by Oliver Hahn 🇪🇺Nereide @drnereide.bsky.social · 11/02/2025🧪 🔭🧵 #histsci #February11 is International Day of Women & Girls in Science. So I would like to highlight Katherine Johnson, #NASA mathematician and computer scientist. A biography➡️ nasa.gov/centers-and-... She was a trailblazer in the quest for racial equality and, as a champion of STEM education, 317246
Reposted by Oliver Hahn 🇪🇺Tim O'Brien @proftimob.bsky.social · 08/02/2026More on catastrophic cuts to UK astronomy & particle physics. Costs of facilities & international subscriptions go up so grants line and individual projects are cut. If the Government is serious about backing science & technology, they need to fix this. www.space.com/astronomy/uk...space.comUK 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." 24117
Reposted by Oliver Hahn 🇪🇺Chanda Prescod-Weinstein 🌌 @chanda.blacksky.app · 06/02/2026Elon Musk et al are totally fucking up the night sky ALREADY and they plan to make it worse 🔭 www.skyatnightmagazine.com/news/satelli...skyatnightmagazine.comAre we destroying our window to the cosmos? Satellite trails could make space science nearly impossible, say astronomers | BBC Sky at Night MagazineProjected 560,000 satellites could overwhelm future observatories. Astronomers worry satellite trails will mar every view of the Universe. 12374155
Reposted by Oliver Hahn 🇪🇺Peter Gleick @petergleick.bsky.social · 05/02/2026Perhaps it was coincidental timing, but nothing underscores the collapse of the Washington Post like firing most of the Pulitzer prize winning #climate reporters the very same day as their opinion pages publishes a BS screed by climate misinformer Bjorn Lomborg. 8373113
Reposted by Oliver Hahn 🇪🇺Michael E. Mann @michaelemann.bsky.social · 15/01/2026Here's the data: 8377183
Reposted by Oliver Hahn 🇪🇺Ethan Siegel @startswithabang.bsky.social · 11/01/2026Starts With A Bang podcast #125 – Large-scale structure Here at the start of 2026, the biggest puzzles in the expanding Universe are the Hubble tension and the question of whether dark energy evolves. Two cosmologists, me and Kate Storey-Fisher, discuss. bigthink.com/starts-with-... #space #astrobigthink.comStarts With A Bang podcast #125 - Large-scale structureThe seeds of cosmic structure that were planted back during the Big Bang grew into the cosmic web we see today. What is it telling us? 2177
Reposted by Oliver Hahn 🇪🇺Christoph Dellago @chhdellago.bsky.social · 28/12/2025Eine Geburtstagsparty für die Schrödingergleichung gibt's am 22-23 Jänner am @esivienna.bsky.social www.esi.ac.at/events/e596/ 0144
Reposted by Oliver Hahn 🇪🇺Ethan Siegel @startswithabang.bsky.social · 22/12/2025How recently have we understood the Universe? The Universe has been around for 13.8 billion years. But it's really only over the most recent millennia, centuries, and decades that humanity has understood it at all. bigthink.com/starts-with-... #space #universe #cosmos #astrobigthink.comHow recently have we understood the Universe?While humanity has been skywatching since ancient times, much of our cosmic understanding has come about only recently. Very recently. 0225
Reposted by Oliver Hahn 🇪🇺Ethan Siegel @startswithabang.bsky.social · 15/12/2025Brightest-ever lensed supernova reveals astronomy’s coming revolution Astronomers found our first gravitationally lensed superluminous supernova. With the Vera C. Rubin Observatory now operational, hundreds, maybe thousands more should be coming. bigthink.com/starts-with-... #space #supernovabigthink.comBrightest-ever lensed supernova reveals astronomy's coming revolutionWith the observation of SN 2025wny, a lensed superluminous supernova, astronomy's future comes into sharp, exciting focus. 0156
Reposted by Oliver Hahn 🇪🇺Michael E. Mann @michaelemann.bsky.social · 10/12/2025#ScienceUnderSiege 57236
Reposted by Oliver Hahn 🇪🇺Ele Willoughby @minouette.bsky.social · 09/12/2025Happy birthday to #mathematician & #computerscientist US Navy rear admiral Grace Hopper (1906-1992) who popularized the revolutionary idea of developing machine-independent programming languages based on English. 🧪🐡👩🏼🔬 #histsci She began teaching at Vassar in 31 & got PhD (Yale) 🧵#artAdventCalendar 27529
Reposted by Oliver Hahn 🇪🇺Daniel Pomarède @pomarede.bsky.social · 08/12/2025Wow 98,000 peculiar velocities The DESI DR1 Peculiar Velocity Survey: Fundamental Plane Catalogue by C.E. Ross and co-authors arxiv.org/abs/2512.03226 For comparison: the Great Attractor was discovered with 400 PVs, Laniakea with 8000 PVs, South Pole Wall with 18,000 PVs #Cosmicflows #Cosmology 🧪 0224
Reposted by Oliver Hahn 🇪🇺The New Yorker @newyorker.com · 05/12/2025A cartoon by Charles Barsotti, from 1994. Shop your favorite cartoons: newyorkermag.visitlink.me/ZjVXum[…]id=... 412015
Reposted by Oliver Hahn 🇪🇺Österreichischer Wissenschaftsfonds FWF @fwf-at.bsky.social · 03/12/2025Der #FWF fördert 3 neue #Spezialforschungsbereiche für mehr Grundlagenwissen in der Medizin, Quantenforschung und Kosmologie. Die neuen Netzwerke werden von Forscher:innen der @uniinnsbruck.bsky.social, der @unisalzburg.bsky.social und der @tuwien.at koordiniert. 📚 www.fwf.ac.at/aktuelles/de...fwf.ac.atFWF bewilligt drei neue SpezialforschungsbereicheMehr Grundlagenforschung in der Medizin, der Quantenforschung und der Kosmologie – der FWF richtet zum Ausbau der Spitzenforschung in Österreich drei weitere Spezialforschungsbereiche ein. 0122
Oliver Hahn 🇪🇺 @cosmohahn.bsky.social · 03/12/2025Very excited and honoured that we got funding for this exciting new research network with a fantastic group of people. 072
Oliver Hahn 🇪🇺 @cosmohahn.bsky.social · 03/12/2025Very excited and honoured that we got funding for this exciting new research network with a fantastic group of people. 040
Reposted by Oliver Hahn 🇪🇺Katie Mack @astrokatie.com · 03/12/2025I haven’t seen this label used before but it seems apt. The video contains a good discussion of what “science populism” is and how it’s harmful. youtu.be/sQnOFGWsXNM?...youtu.beEp 0: The Rise of the Science PopulistsYouTube video by Bad Boy of Science 1944496
Reposted by Oliver Hahn 🇪🇺Daniel Pomarède @pomarede.bsky.social · 01/12/2025LiteBIRD Mission Takes One Step Forward The next-generation cosmic microwave background (CMB) polarization satellite has been approved to move forward, following a review held at JAXA's Institute of Space and Astronautical Science. #LiteBIRD 🧪 #Cosmology www.ipmu.jp/en/20251201-...ipmu.jpLiteBIRD Mission Takes One Step ForwardDecember 1, 2025 The University of Tokyo Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU, WPI) 0247
Reposted by Oliver Hahn 🇪🇺Katharina Nocun @kattascha.bsky.social · 29/11/2025Der Beschluss des Grünen-Parteitags gegen eine Erstattung von Homöopathie durch gesetzliche Krankenkassen ist ein wichtiges Signal. Es geht nicht (nur) ums Geld. Es geht auch um Abgrenzung: Was durch die Solidargemeinschaft finanziert wird, muss wissenschaftlich belegt sein. Die Erstattung führt… 392251410
Reposted by Oliver Hahn 🇪🇺Matt Salomone @matthematics.com · 29/11/2025Still among my favorite science memes lol 519245
Reposted by Oliver Hahn 🇪🇺Leila Belkora PhD, astrophysics @leilabelkora.bsky.social · 12/11/2025I didn’t know it was this bad at Goddard. Infuriating. 🧪 22613
Reposted by Oliver Hahn 🇪🇺Matt Bothwell @mattbothwell.com · 26/11/2025It was a huge pleasure to be back at the Royal Institution last month! I gave a lecture all about the mysteries of dark matter, which is now up on YouTube. 🧪🔭 (As a bonus, my demo actually worked, unlike in my 2021 Ri talk...!) www.youtube.com/watch?v=bLa3...youtube.comThe quest for dark matter with Matt BothwellYouTube video by The Royal Institution 2124