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Duncan K Galloway

@duncankgalloway.bsky.social
906 followers 416 following 290 posts

Astrophysicist, educator, cyclist, science communicator. Living through a climate emergency (as are we all) on Boon Wurrung/Wurundjeri land/Netherlands. He/him. outs1der.github.io ORCID: 0000-0002-6558-5121

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Reposted by Duncan K Galloway
Astronomy On Tap - Sydney @astro-on-tap.sydney · 05/10/2026
Join us in 1 week at 6:30 PM on 13 October for our 2nd Astronomy on Tap - Sydney! Talks from A/Prof Devika Kamath, Prof Geraint Lewis, and Dr Jesse van de Sande! This time we will be at the [Crows Nest Hotel](maps.app.goo.gl/4YEAbzAJgZik...) RSVP for free at events.humanitix.com/astronomy-on...
events.humanitix.com
Astronomy on Tap - Sydney Round 2
Fun talks about astronomy at the Crows Nest Hotel! Learn about how stars are born and die, and drink beer while you do it!
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Clément Canonne @ccanonne.github.io · 10h
I wrote a blog post on "TCS, AI, and the Adults in the Room," addressed to the senior researchers and established academics in our field: minorfree.github.io/Clement/ Thanks to @hunglv.bsky.social for lending me his blog!
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21 Group @21group.bsky.social · 07/10/2026
Problems intensify for Cambridge University Alongside Arday reviews, there is a review into Human Resources, prompted by loss of 'Cambridge Whistleblowing' Tribunal Panel is full of University insiders -- former VC, ex-heads of UCAS & UCEA, an HR executive No staff or union representative
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Reposted by Duncan K Galloway
Andrea Luck @andrealuck.bsky.social · 10/10/2026
Phobos (including Saturn and Deimos) in the latest release of @esa.int Mars Express Can you spot Saturn? Full size & more info: flic.kr/p/2sFoFaS 🔭🧪 Credit: ESA/DLR/FUBerlin/AndreaLuck CC BY ESA Mars Express Release September 15, 2026 Note: Saturn has been enlarged by 300%
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Astronomy Picture of the Day 🪐 @apod.shinyakato.dev · 23h
🔭 Lunar Farside Credit: NASA / GSFC / Arizona State Univ. / Lunar Reconnaissance Orbiter ap261010
A mosaic image of the farside of the Moon.
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Ars Technica @arstechnica.com · 09/10/2026
arstechnica.com
AI coding agents generate more code, but not more software
Study finds coding efficiency gains get "absorbed" by human review "bottleneck."
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Robert "The Bobby Yaga" McNees @mcnees.bsky.social · 10/10/2026
The physicist and astronomer Karl Schwarzschild was born #OTD in 1873. In 1915, while serving in the German army on the Russian front, he found the first exact (non-trivial) solution of Einstein’s theory of general relativity. Among other things, it describes a non-rotating black hole. 🧪 ⚛️ 🔭
Black and white photo of Karl Schwarzschild, seated outside. He wears  dark suit with a white shirt and tie, and is holding a small pad of paper on his knee.
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Graham Lea @evolvable.bsky.social · 10/10/2026
“The latest ATO data shows about 2.3 per cent of tax payments were made with credit cards in [FY25], most of them coming from privately owned wealthy groups, and public and multinational businesses.” So… it’s a beat-up that this is hurting small business. So surprise. www.sbs.com.au/news/article...
sbs.com.au
How the ATO found itself embroiled in a battle over credit cards that forced a rethink
A decision to stop accepting credit cards for tax bills became an unexpected political flashpoint.
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Duncan K Galloway @duncankgalloway.bsky.social · 09/10/2026
Space tiramisu no less!
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Reposted by Duncan K Galloway
Jake Grumbach @jakemgrumbach.bsky.social · 09/10/2026
New working paper: the Norwegian wealth tax was a huge success. The "exodus" of wealthy people never happened (less than 100 individuals left). Tax revenue increased by 71.5%. No changes in business activity or investment. www.nber.org/papers/w35854
Taxing Entrepreneurial Wealth: Evidence from
Norway, 2021-2025
Marius A. K. Ring
WORKING PAPER 35854|
DOl 10.3386/w35854
ISSUE DATE October 2026
Whether imposing higher taxes on business owners adversely affects business activity by constraining investment and inducing capitalist flight is a central question in the ongoing debate on how to tax the ultra wealthy. To shed new light, I exploit a series of related Norwegian reforms during 2021-2024 that increased dividend tax rates, removed migration-related capital gains tax loopholes, and nearly doubled the effective marginal tax rate on business wealth. These reforms spurred international debate and, allegedly, an "exodus" of Norwegian billionaires (Financial Times,
2023). While I document clear effects on migration, these responses are concentrated among the top 0.1% of the wealth distribution and mostly confined to 2022 and 2023. My results indicate that at most 100 individuals left due to the reforms. I find no evidence of significant outmigration or reduced inflows of startup founders or inventors. I estimate that absent any outmigration, wealth tax revenues would have increased by 75% from 2021 to 2024. Reform-driven outmigration lowers the revenue gain to 71.5%. My findings further show that outmigrating owners' firms remain economically active and do not reduce investment. In a broader set of analyses, I examine whether business outcomes are affected, regardless of whether owners outmigrate, since firms may reduce investment both due to liquidity constraints or distortions to owners' savings decisions. I compare firms owned by Norwegian individuals subject to the wealth tax with firms owned by foreigners and other tax-exempt entities. By merging historical ownership data from Orbis with the Norwegian shareholder register, I perform these analyses on both Norwegian and foreign-domiciled firms.
Across settings, I find no evidence that Norwegian-owned firms pay out more dividends or invest less after the reforms,…
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Reposted by Duncan K Galloway
AAS Nova @aasnova.org · 09/10/2026
Researchers have discovered a millisecond pulsar with two stellar companions — one of only a handful of these rapidly spinning stellar remnants known to be in a triple system. aasnova.org/2026/10/09/a... 🔭🧪
aasnova.org
A Pulsar in a Rare Triple System
Researchers have discovered a millisecond pulsar with two stellar companions — one of only a handful of these rapidly spinning stellar remnants known to be in a triple system.
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Prof Anna Watts @profannawatts.bsky.social · 03/10/2026
I do love my city - where despite having the largest bicycle park in the world we actually need EVEN MORE. #greencityproblems #utrecht www.duic.nl/algemeen/alg...
duic.nl
Grootste fietsenstalling ter wereld niet groot genoeg voor Utrecht: gemeente werkt aan uitbreiding
De fietsenstalling onder het Stationsplein in Utrecht mag dan wel de grootste ter wereld zijn, steeds vaker staat de stalling tot de nok toe gevuld.
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Prof Anna Watts @profannawatts.bsky.social · 08/10/2026
Tech heldin.🌠 Softwarepionier eerste maanlanding Margaret Hamilton (90) overleden - nos.nl/l/2634077
nos.nl
Softwarepionier eerste maanlanding Margaret Hamilton (90) overleden
Door haar baanbrekende werk kon de Apollo veilig op de maan landen. Margaret Hamilton werd 90 jaar.
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Dennis Just 🌵 @sciencepolice.bsky.social · 09/10/2026
Satellite megaconstellations found systematically brighter than IAU's recommended limit of 7th magnitude: 🇨🇳 Guowang/Julianwang more than 50% of the time 🇺🇸 Starlink ~25% of the time 🚀 Rocket bodies ~20% of the time 🇫🇷 Oneweb does the best at only ~5% of the time arxiv.org/abs/2610.10834
A black image with white streaks crossing it. The caption from the paper reads: "Co-added image of all satellite detections on the night of 31 May–1 June 2024 from a single camera. Objects appearing as dotted lines are aircraft strobes and are rejected by software; meteor trails and trailed star images are also visible."
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Duncan K Galloway @duncankgalloway.bsky.social · 09/10/2026
Achievement unlocked!
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Justin Mikulka @justinmikulka.bsky.social · 09/10/2026
From 2019: "When it comes to the long-term economics of power generation, it isn’t a fair fight. There is no clear way natural gas can compete with renewables on an economic basis in the coming decades." And now in 2026....
utilitydive.com
4-hour storage cheaper than gas peakers across global markets: WoodMac
In North America, data centers are boosting the long-term investment case for energy storage and renewables as gas turbine backlogs and rising fuel volatility drive up peaking costs, according to a Th...
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Lana Sinapayen @sinalana.eurosky.social · 09/10/2026
This is excellent. Great presentation, eye opening, and makes you think. sheets.works/data-viz/hol...
sheets.works
The people holding up the internet
Four billion phones ask one text file what time it is. One lecturer keeps it in his spare time. We counted the rest.
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NTEU Victoria @nteuvictoria.bsky.social · 09/10/2026
A student advisor has won a major work-from-home case against Victoria University, after the Fair Work Commission granted her the right to flexible work due to her age. nine.com.au/australia-ne... #HigherEducation #AcademicSky #HigherEd
nine.com.au
Uni ordered to let employee work from home to avoid commute
Student advisor Michele Duffy cited her age and fatigue from the commute to campus as reasons for her flexible work bid.
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Patrick Stokes @patrickstokes.com · 09/10/2026
This story is an absolutely wild ride:
theguardian.com
A death, a plagiarism scandal and a quest for revenge: the bizarre tale of Otto Z
The long read: After his mother died, Otto became convinced he’d been wronged by the forensic investigators – and that one of them was a fraud. The truth was even stranger
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Prof Anna Watts @profannawatts.bsky.social · 09/10/2026
Beide kinderen in het paars naar school! Fijne Paarse Vrijdag allemaal 💜🏳️‍🌈💜
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Chris Lintott @chrislintott.bsky.social · 09/10/2026
As expected, the Prime Minister's promise to sort out the mess of funding for Jodrell actually meant nothing - it seems the government would like it to be some sort of heritage theme park when you can go and see where we used to do science. 🔭
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Astronomy Picture of the Day 🪐 @apod.shinyakato.dev · 09/10/2026
🔭 Stickney Crater Credit: HiRISE, MRO, LPL (U. Arizona), NASA ap261009
A color enhanced close-up image of Stickney Crater on Phobos.
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The Conversation UK @uk.theconversation.com · 09/10/2026
Meal prep can be useful. By following these tips, you can also ensure your meals are safe.
tcnv.link
How to meal prep safely: a microbiologist’s step-by-step guide
Meal prep can be useful. By following these tips, you can also ensure your meals are safe.
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climatecouncil.org.au @climatecouncil.org.au · 09/10/2026
How one little town is going for a little less conversation, a little more (climate) action. 🕺☀️ One solar farm in the region sits in a sheep paddock and makes enough clean energy to power more than 21,000 homes.
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Robert "The Bobby Yaga" McNees @mcnees.bsky.social · 08/10/2026
Occasional PSA, 2026 edition: @duetosymmetry.com and I made a graph paper package for LaTeX. Various styles (graph, quadrille, hex, iso, dot grid, etc) with pre-defined or custom colors. Print it or make templates for your tablet. 🧪 Github: github.com/mcnees/LaTeX... CTAN: ctan.org/pkg/gridpapers
A light blue grid on a white background.
A red isometric grid on a pink background.
A brown grid with major and minor lines, on a pale yellow background.
A green hex grid on a light green background.
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Tara Murphy @taramurphy.bsky.social · 08/10/2026
A fast radio burst at redshift 2, three billion years after the Big Bang! Exiting new result from @manishacaleb.bsky.social and team using MeerKAT and JWST. theconversation.com/astronomers-... #RadioAstronomy ☄️ 🔭 ⚛️
theconversation.com
Astronomers pinpoint the origin of a 10 billion-year-old millisecond signal from space
A flash of radio waves from a young galaxy 3 billion years after the Big Bang is lighting up 80% of the universe’s history.
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c0nc0rdance @c0nc0rdance.bsky.social · 08/10/2026
For World Octopus Day🐙, let's learn a weird fact about the three hearts of our eight-legged friend. The SYSTEMIC HEART of an octopus STOPS BEATING while they swim / jet. Seems like a design flaw, doesn't it? Let's talk about it.
static.klipy.com
National Geographic: Swimming Octopuses101
Alt: National Geographic: Swimming Octopuses101: it's a red-tinted octopus on a short loop moving slightly to the viewer's right as it turns to face the camera.
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Michael Zingale @michaelzingale.bsky.social · 08/10/2026
Stony Brook Astro Group is hiring for a tenure-track faculty position: apply.interfolio.com/193127 #astro
apply.interfolio.com
Apply - Interfolio {{$ctrl.$state.data.pageTitle}} - Apply - Interfolio
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Prof Anna Watts @profannawatts.bsky.social · 08/10/2026
Congratulations to now *Dr* Gabriele Montefusco, from Université de Caen Normandie, on a stellar PhD defence! And fun to share a screen with fellow PhD jury members including @jocelynread.bsky.social !
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Esther Anatolitis @anatolitis.bsky.social · 08/10/2026
It's not "training" – it's assimilation. It's not "intelligence" – it's content generation. It's not a "life form" – it's a commercial product. Humanising it absolves Big Tech of responsibility. Let's change how we talk about AI. My latest for @thepointau.bsky.social: thepoint.com.au/opinions/261...
thepoint.com.au
The Point
The Point, helping readers make sense of the issues shaping their lives today.
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Jonathan McDowell @planet4589.bsky.social · 08/10/2026
Margaret Hamilton has died. Absolute legend, it was my honour to meet her and have a conversation with her just a few years ago, super nice and still sharp. Ave atque vale Margaret. news.mit.edu/2026/margare...
news.mit.edu
Margaret Hamilton, computing pioneer who led software development for the Apollo program, dies at 90
Margaret H. Hamilton, a profoundly influential computer scientist best known for leading the software engineering team at MIT’s Instrumentation Lab during NASA’s Apollo program, died at age 90.
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CosmicRami 🏳️‍🌈🏳️‍⚧️ @rami.spaceaustralia.com · 08/10/2026
Often hearing about turning research into industry applications. This article from Chile's Center for Astrophysics and Associated Technologies is probably the clearest explanation of a successful strategy I have seen to date. They set up a specialist team to sit between researchers & industry.
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Melissa & Chris Bruntlett @modacitylife.com · 08/10/2026
One of the key lessons from Dutch cycling history is cities didn't start with protected lanes. They began by making streets safer, calmer and more inviting; with lower speeds, parking restrictions, traffic filters and reduced through-traffic to create an environment in which cycling could flourish.🧵
A cycling priority street in the Netherlands where drivers are guests and cyclists are the main users.
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cara giaimo @cjgiaimo.bsky.social · 08/10/2026
i was fortunate enough to profile Margaret Hamilton in 2019. A really kind and curious person. This was my favorite story she told me:
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Ethan Siegel @startswithabang.bsky.social · 07/10/2026
IceCube, high-energy neutrinos, and Francis Halzen win 2026’s Physics Nobel A deep dive on the history and development of high-energy neutrino astrophysics. Francis Halzen thoroughly deserves to be physics' first solo Nobel Laureate since 1992! bigthink.com/starts-with-... #space #physics #astro
bigthink.com
IceCube, high-energy neutrinos, and Francis Halzen win 2026's Physics Nobel
Back in 1988, Francis Halzen had what he called a "cute idea." His vision grew into the IceCube observatory, and earns the 2026 Nobel Prize.
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The Australia Institute @australiainstitute.org.au · 07/10/2026
"The problem isn't being caused by immigration." Tax concessions cooked Australia's housing market, not migration, @mattgrudnoff.bsky.social & @maiyazize.bsky.social tell @ebonybennett.bsky.social. Listen to Follow the Money via the link or wherever you get your pods. #auspol 🎧 theaus.in/4cbA7IA
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Zara @zarasaunders.bsky.social · 06/10/2026
This is a great piece of the inherent limitations of consent education to prevent sexual assault. It is especially true in the Australian context with campaigns such as teach us consent that harmfully framed rape as an issue of misunderstanding or miscommunication (thus removing boys/men’s agency)
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21 Group @21group.bsky.social · 07/10/2026
An entitled & over-paid senior management team destroyed a University with property mismanagement Modern Languages, Music and American & Canadian Studies are closed down at Nottingham Very sad for all the staff losing their jobs www.bbc.co.uk/news/article...
bbc.co.uk
University of Nottingham approves controversial savings plan
Changes will see job losses, axing modern languages and music degrees, and cutting support services.
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Matthew Cobb @matthewcobb.bsky.social · 06/10/2026
A lot of excitement on here about the article in Science summarising the discoveries of @alistairsponsel.bsky.social and Brian Sutton, just published in the Journal of the History of Biology. Some people have asked, so here is what I think they show, and what are the implications:
link.springer.com
Photograph 49 is the Key to Understanding the History of Rosalind Franklin’s DNA Photograph 51 - Journal of the History of Biology
This essay, co-authored by a historian of science and an X-ray crystallographer, sheds new light on Rosalind Franklin’s Photograph 51. We refute the infamous claim that, unlike James Watson, Franklin ...
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Jed Brown @jedbrown.org · 05/10/2026
If you are an academic who uses arXiv, please consider signing this. **Give Authors Control: Let Us Decide If AI Bots Can Read Our arXiv Papers** math.mit.edu/~elmos/petit...
Currently, authors posting to arXiv have no control over whether bots scrape their full-text PDFs and LaTeX source files.

We are calling on arXiv to implement a simple permission toggle during submission, allowing authors to decide what automated scrapers can access:

Full Access: Bots can read and scrape the full text and source files.

Metadata Only: Bots are restricted to the Title, Abstract, and Citation metadata.

Open science for human readers should not mean mandatory, unconsented data harvesting by commercial entities. Advancing scientific knowledge demands immense time, resources, and intellectual rigor — we deserve a say in whether our original work is fed into massive, opaque training sets.
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Paula 🌹 @paularose.bsky.social · 07/10/2026
The Black Line: the story of the biggest-ever military campaign against Aboriginal people On 7 October 1830, the largest force ever assembled against Aboriginal people anywhere in Australia was mobilised - some 2,200 soldiers, police, civilians and convicts. www.sbs.com.au/nitv/article...
sbs.com.au
The Black Line: the story of the biggest-ever military campaign against Aboriginal people
On 7 October 1830, the largest force ever assembled against Aboriginal people anywhere in Australia was mobilised - some 2,200 soldiers, police, civilians and convicts.
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Blair Palese @blairpalese.bsky.social · 07/10/2026
Such an important high court, precident-setting win putting a stop to the idea that we can keep mining & selling #coal & #gas without being responsible for the #climate impacts! Here’s to many more cases to follow & to these amazing community leaders! #auspol www.theguardian.com/environment/...
theguardian.com
Hunter Valley community group wins landmark high court climate change case over Mount Pleasant coalmine
Ruling on Mount Pleasant coalmine shows ‘we cannot continue to dig up coal … and pretend the consequences have nothing to do with us’, group says
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Dr. Skylar Grayson @skylargrayson.bsky.social · 06/10/2026
Alright so what's the deal with neutrinos? And why is discovering high energy versions of them worthy of a Nobel Prize? Let's break it down!
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ABC News Australia @news.abc.net.au · 06/10/2026
UTAS move to CBD 'turned sour' in wake of COVID, now financial issues mounting, economist says
abc.net.au
UTAS debts mounting after CBD move 'turned sour', economist says
The University of Tasmania's finances face twin problems of large debts and little revenue coming in, an economist who fronted a parliamentary inquiry says.
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★ govert schilling @govertschilling.nl · 06/10/2026
francis halzen! hoogenergetische neutrino's uit het heelal, ontdekt met icecube detector op antarctica #nobelprijs
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CosmicRami 🏳️‍🌈🏳️‍⚧️ @rami.spaceaustralia.com · 06/10/2026
This year's Nobel Prize in Physics has been awarded to Francis Halzen for work on neutrinos of astrophysical origin using the Ice Cube Neutrino Observatory at the South Pole en.wikipedia.org/wiki/IceCube... #NobelPrize #Astrophysics #ParticlePhysics
Fracis Halzen photo on Nobel Prize website
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Wouter van Bernebeek @woutervanbernebeek.bsky.social · 06/10/2026
☀️ Fantastische 'zonneharpen' schijnen door een mistige bomenrij heen! Ochtend na ochtend kunnen we deze periode genieten van dit soort kleurrijke verschijnselen:
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Cam Walker @camwalker.bsky.social · 06/10/2026
This was our reaction to the VIC parliament report into last summer's fires. The recommendations are really solid & we need to implement as many as possible before the start of fire season. www.melbournefoe.org.au/response_to_...
melbournefoe.org.au
FoE reaction to the VIC bushfire inquiry report
Mobilise! Resist! Transform!
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Science Magazine @science.org · 05/10/2026
Exclusive: A new analysis refutes James Watson’s claim that he was the first to recognize the significance of the famed photograph 51. scim.ag/4rTKck8
scim.ag
How did Rosalind Franklin miss the helix in her iconic DNA image? She didn’t
New analysis refutes James Watson’s claim he was first to recognize significance of famed photograph 51
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Dr Monique Ryan @mon4kooyong.bsky.social · 06/10/2026
More than half of the people living in Kooyong were either born overseas or have a parent who was born overseas. I’m hearing from many of them that the political debate about immigration is making them feel marginalised and othered.
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