Stormy Scotman's Bay. Not the biggest waves I captured yesterday but I always love to get birds in my shots to add to the stormy atmosphere.

It's great to see Ireland exploring geothermal. Some information about @ucddublin.bsky.social's involvement in GEMINI here: www.ucd.ie/earthscience...

On my way to Boise to do some talks about LISA and gravitational waves. Did an interview this week with Idaho Matters on Idaho Public Radio about what we are going to talk about! Give it a listen! www.boisestatepublicradio.org/show/idaho-m...

What a wildly stupid idea. Mandatory helmets and high viz is a proven remedy to reduce the number of people cycling. It effectively kills off things like Dublin Bikes. That's why no other EU country does anything like this. Pure madness.

This is cycling in Copenhagen. No hi-vis. No helmet mandates. People cycle because it’s safe — by design. This is what cycling should look like. Ireland is moving in the opposite direction. Instead of designing safe places to cycle, we're blaming the people cycling...

Two years of pavement parking ban in Edinburgh and the sky has not fallen. Drivers have changed their behaviour. This makes a big difference to parents with biggies and people who use wheelchairs. Would be great to see this in Dublin. @dccbeta.bsky.social @dubcitycouncil.bsky.social

Recent paper the cites the BHPToolkit: "Spiral Density Waves and Torque Balance in the Kerr Geometry" by Conor Dyson, Daniel J. D'Orazio, arxiv.org/abs/2601.19123.

Engineers & scientists at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, completed tests this month on a second early version of a key element of the upcoming LISA mission. Read all about it 👉 science.nasa.gov/missions/lis... Multimedia 👉 svs.gsfc.nasa.gov/14955

The Royal Society's Rumford Medal is awarded for important discoveries in the field of thermal or optical properties of matter and their applications. Submit your nomination now: #RSMedals https://royalsociety.org/medals-and-prizes/rumford-medal/

In the first of our new series of curiosity-driven essays, Qualia, @nattyover.bsky.social asks particle physicists whether the field is facing a profound crisis. www.quantamagazine.org/is-particle-...

#LISACommunityTalks The #LISACommunity recently hosted a talk by Shawn Ray on a paper by Shawn Ray, Keefe Mitman, Emily McPike, Barry McKernan, K.E. Saavik Ford: "Spinning and Kicking New Remnants: Considering Surrogate Models for McFACTS Merger Dynamics", for which a paper will be coming soon!

Ourselves, @dublincommuters.bsky.social, @galwaycommuters.bsky.social, & Cork Commuter Coalition wrote to Iarnród Éireann & the NTA today, asking them to cease posting real-time service updates exclusively on X. This vital info should be widely available. Read below: docs.google.com/document/d/1...

🎶 TradFest 2026 lights up Dublin this Saturday! Enjoy free pop‑up sets from Declan Coles, The Knockadollys, Reylta and Seán Collins across the city. Follow the music and feel the energy of Dublin. Full programme: tradfest.com #TradFest2026

Every now and again this gets recommended by an elected official, it’s obviously quite silly when you dig into it Private motorists don’t need more space when traffic is light, & when there is congestion buses need the priority

New research on how early baby black holes grew into supermassive giants just hundreds of millions of years after the Big Bang has been published in Nature Astronomy 🌌 @jameswebbdiscovery.com www.maynoothuniversity.ie/news-events/...

Judging by the available occupancy of the hotel I just booked, I think I found Hilbert's Grand Hotel

Maths at @dublincityuni.bsky.social is now on @bsky.app with the handle @dcumaths.bsky.social :)

🔭 CTB 1: The Medulla Nebula Image Credit: Pierre Konzelmann apod.nasa.gov/apod/ap26011...

An amazing sunrise at Clontarf around this time last year.

New map work! Greenways of Ireland. Something I've been wanting to do for a long time. Surprising just how many there are, and even more in planning #GreenwaysIreland #ActiveTravel #Cycling See more about the map on @irishcyclingcmpn.bsky.social here: www.irishcyclingcampaign.ie/greenways/

Today, 10 years ago, we had the first laser light on LPF! 💛🛰️ Laser interferometry was used on LPF to track the position of the test masses along the sensitive axis, and will be used on LISA too for the same purpose. #LPF10anniversary #LISAMission [Image credits: University of Glasgow]

Red light cameras left idle for a decade, draft plan left unfinished for 8 months but Govt says reducing road deaths “absolute priority” -- Law for enforceable variable-speed limits for the M50 and other major roads enacted in 2023.-- Much-ignored advisory square speed sign cannot be enforced.--…

A stunning sunrise over Dublin Bay this morning. Between the Bull Wall and Dublin Port, with North Bull Lighthouse silhouetted against a beautiful sky. Early morning birds along the shoreline and a beautiful sun pillar rising through the colours made it extra special. #dublinsunrise

A fiery sky, sun pillar and crepuscular rays over Ireland's Eye from Portmarnock this morning.

Poignant letter by Dr Lisa McNamee in the Irish Times this morning.

where my mind goes whenever people complain that a bike lane is a waste of space because it’s underused

Would be great to see this come to Ireland as well.

On this day, for #LPF10anniversary: following the successful separation from the launch vehicle, the mission operations team at ESOC undertook one of the most complex Launch and Early Operations Phases (LEOP) ever undertaken or an ESA mission. Watch it here 📽️ www.youtube.com/watch?v=maKX...

Aurora Borealis over Ireland's Eye tonight from Howth.

Check out recently published research in CQG discussing the function, design, and current status of Laser Interferometer Space Antenna (LISA) telescopes under development at NASA iopscience.iop.org/article/10.1...

A fantastic report from Limerick with an unequivocal conclusion: the majority of Limerick’s protected cycle lane schemes “maintained or enhanced” access for emergency vehicles. Will our planners listen though? That is the question.

From LISA Pathfinder to LISA: Celebrating 10 years of LPF launch 🛰💛 "A fantastic mission. Everybody who worked with LPF felt in love with the mission." - Stefano Vitale, LPF PI

The best way to reduce congestion is to give people good alternatives to driving. This is why it is so disappointing to see the government put the DART+ South West scheme on the long finger.

Paper day!

Happy 10th launch anniversary, LISA Pathfinder! 🥳 For the first time ever, this mission tested in space the technology needed to detect gravitational waves, which paved the way to LISA 🤜 🤛 Planned to launch in 2035, LISA will be first gravitational wave detector in space 👉 esa.int/lisa 🔭

Relive the Moment: LISA Pathfinder has launched! 🚀🛰️ At 04:04UTC on the 3rd December, LISA Pathfinder successfully launched on top of a VEGA launcher. The rockets first three stages burned for ~7minutes, followed by a nine minute burn for the rockets upper stage. www.esa.int/ESA_Multimed...

10 years ago we were just getting ready for the launch of LISA Pathfinder - the geodesic explorer and #LISAmission's precursor🛰️ LPF launched on Dec 3, 2015, at 04:04 UTC/05:04 CET/23:04 ET on Dec 2! [Credits: Directed by Stephane Corvaja, ESA; Manuel Pedoussaut, Zetapress; Music by Hubrid-Gravity]

From Ansh Gupta: Astronomers have spent decades searching for seeds of the earliest black holes. Did JWST just glimpse the very first ones? ⚛️🔭☄🧪 astrobites.org/2025/11/27/g...

Aideen’s story has sparked an overwhelming response, showing the real impact that pavement parking has on people’s daily lives across the UK. This is why we are campaigning to end pavement parking. https://www.birminghammail.co.uk/news/midlands-news/shaken-birmingham-woman-calls-pavement-32904943

Webb's #NIRSpec has helped astronomers weigh up a supermassive black hole in the early Universe – and found it much more massive than expected. Read more 👉 www.esa.int/Science_Expl... 🧪 🔭

How much information can we gain by pushing numerical relativity to its limit by simulating black hole scattering encounters? My latest paper (below) explores these extreme regions of the black-hole scattering parameter space using simulations generated using the Spectral Einstein Code (SpEC).

It's an honour to have been elected as the Spokesperson for the LISA Consortium. I look forward to working with this great community over the next two years. www.ucd.ie/newsandopini... @lisacommunity.bsky.social

All the lectures for the first #LISASchool that was held at Ecole de physique des Houches on Oct 7-17 2025 are now available on Youtube! 📽️ Check them out here 👉 www.youtube.com/playlist?lis...

What an inspiring two weeks at Ecole de Physique des Houches! 🏔️ 🇫🇷 The first #LISASchool for Early Career Scientists brought together young researchers from around the world to learn, collaborate, and explore the science behind #LISAMission, the first space-based gravitational-wave observatory.

When you provide regular rail service between cities, people use it. Passenger numbers are up 40% on the Dublin-Belfast route since the introduction of hourly services.

Meet GW241011 and GW241101: with rapid spins and mismatched black hole masses, these gravitational wave events provide strong evidence for black hole growth through successive mergers. aasnova.org/2025/10/28/n... 🔭🧪 @ligo.org

With the completion of the Butterfield Ave/Firhouse Road section of the Dodder Greenway it is now possible to cycle ~13km from Ely's Arch to the Bohernabreena Reservoir Park (almost) entirely off road.

Three papers from the Multiscale Self-Force (MSF) collaboration on the arXiv yesterday that made use of the BHPToolkit. The first was "Spin-aligned inspiral waveforms from self-force and post-Newtonian theory" by Loïc Honet et al. arxiv.org/abs/2510.16112

Recent paper that cites the BHPToolkit: "Black hole mergers beyond general relativity: a self-force approach" by Ayush Roy, Lorenzo Küchler, Adam Pound, Rodrigo Panosso Macedo, arxiv.org/abs/2510.11793

Paper on the arXiv today that uses the BHPToolkit: "Transition-to-plunge self-force waveforms with a spinning primary" by Loïc Honet, Lorenzo Küchler, Adam Pound, Geoffrey Compère, arxiv.org/abs/2510.13958