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Einstein Telescope @einsteintelescope.bsky.social · 29/09/2026

📸 New #ET_snapshot: construction starts at ET-SUnLab in Sardinia, new site studies in the Euregio Meuse-Rhine, strong municipal support in Lusatia — plus a step towards the global IGWN. Full roundup on LinkedIn 👉 www.linkedin.com/feed/update/... #EinsteinTelescope #GravitationalWaves

A small group wearing high-visibility vests conducting fieldwork in an open rural area as part of Einstein Telescope site studies.

People speaking with Einstein Telescope researchers at an outreach stand during a public event in Sardinia. Posters, screens and ET Italy materials are visible in the background.

Representatives of the Bautzen district and Einstein Telescope Lausitz during the handover of letters of support from all 57 towns and municipalities in the district.

Table covered with maps, photographs, brochures and creative materials exploring the Einstein Telescope and its possible impact on the Euregio Meuse-Rhine region.

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Einstein Telescope @einsteintelescope.bsky.social · 08/09/2026

How do you build 120 km of beam pipes for the Einstein Telescope and keep them exceptionally clean, stable and under ultra-high vacuum? A full-scale pilot sector at CERN is helping us find out. Discover the engineering behind ET’s vacuum system 👇 einsteintelescope.eu/news/buildin...

Long view of the CERN test facility, with a large metallic beam-pipe section running along the hall beneath yellow support structures and an overhead crane.

Two technicians in protective suits working on a beam-pipe test section at CERN, surrounded by yellow support frames, cables and vacuum equipment.

Technician operating vacuum equipment beside a large cylindrical beam-pipe test section at CERN.

Close-up of the connection between two metallic beam-pipe sections, showing the flange, bolts and flexible vacuum tubing.

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Einstein Telescope @einsteintelescope.bsky.social · 03/09/2026

At the 2-3 Sept APPEC meeting in Geneva, participants fine-tuned the European Astroparticle Physics Strategy 2027-2036. In the draft document, the Einstein Telescope was named the next major flagship project for gravitational-wave astronomy. Final roadmap due end of 2026! #EinsteinTelescope

Group photo of around 80 conference participants standing in several rows in a bright, modern atrium with trees, benches, and white tables.

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Einstein Telescope @einsteintelescope.bsky.social · 13/08/2026

Since May 2025, a working group has been preparing a multifaceted framework for site decision for the Einstein Telescope. They are expected to deliver a report with advice in the autumn of 2026. 👉Read more: einsteintelescope.eu/news/prepari...

Graphic showing the three official candidate sites for the Einstein Telescope: Sardinia, the Euregio Meuse-Rhine and Lusatia. Each site is represented by a circular black-and-white landscape photo on a blue background, connected by curved white lines.

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Einstein Telescope @einsteintelescope.bsky.social · 07/08/2026

The first joint ET-LISA Synergy Project is bringing together 40+ scientists to build shared code for joint gravitational-wave analyses. Combining observations across different frequency bands will reveal more about the early Universe than either detector alone. 🔗https://lnkd.in/ds5puvMb

Corner plot and posterior distributions comparing parameter estimation from LISA alone, the Einstein Telescope (ET) alone, and a joint LISA+ET analysis. Blue represents LISA, orange ET, and green the combined analysis. The joint LISA+ET results show substantially narrower posterior distributions for several parameters, illustrating the improved precision achieved through multiband gravitational-wave observations.

Conceptual illustration of joint LISA and Einstein Telescope observations of a binary black hole system. Three LISA spacecraft form a triangular laser interferometer in space above Earth, while gravitational-wave ripples extend toward the underground Einstein Telescope facility below the surface. Two black circles represent the binary source. The text “LISA × ET” appears prominently at the top.

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Einstein Telescope @einsteintelescope.bsky.social · 30/07/2026

🔦 #ET_young Meet Romano Meijer, System Engineer at the Einstein Telescope Organisation Project Office at Nikhef. Romano helps bring together the many technologies behind ET into one coherent design. Off the clock? He's often under the stars, capturing galaxies like M101 with his own telescope. 🔭✨

Black-and-white portrait of Romano Meijer speaking into a handheld microphone during a panel discussion, seated at a table with notes in front of him.

A portable astrophotography telescope and camera setup standing in a grassy field at dusk, with the last light of sunset visible on the horizon.

R. Meijer: Astrophotograph of the Pinwheel Galaxy (M101), showing its faint spiral arms surrounded by a field of stars.

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Einstein Telescope @einsteintelescope.bsky.social · 17/07/2026

July isn’t over yet, but it has already brought major developments for the Einstein Telescope across Europe - from strategic discussions and joint candidacy steps to new research infrastructure, public engagement and technology projects. Explore our latest #ET_snapshot: lnkd.in/ddZHNwHU

Group photo of participants in the Einstein Telescope Organisation Funders Group meeting, standing in a conference room beside a screen showing colleagues joining remotely.

Representatives wearing hard hats take part in the groundbreaking ceremony for the SUnLab underground laboratory in the Sos Enattos area of Sardinia.

Group of representatives posing on stage after the signing of a memorandum of agreement supporting a joint Sardinia–Lusatia candidacy to host the Einstein Telescope.

The Zero-vibration Sorption Cryocooler consortium is developing a high-power sorption cooler that will be tested at the #ETpathfinder laboratory in Maastricht.

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Einstein Telescope @einsteintelescope.bsky.social · 05/07/2026

📸 #ET_Snapshot | June was busy across the Einstein Telescope community: updates from Italy, EMR and Lusatia; a record silicon mirror in Liège; ET exhibitions in Flanders; the ET fulldome film in Fukuoka; and new cross-border skills work through #NEXT3. More👇 shorturl.at/3Wgpx

Collage showing the production stages of a large mono-crystalline silicon mirror: raw ingot, machining, polishing, and robot figuring.

Science outreach performance on stage, with two presenters in blue and orange costumes explaining gravitational-wave detection to an audience.

Large group of Einstein Telescope collaborators standing outdoors in front of a research building.

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Einstein Telescope @einsteintelescope.bsky.social · 19/06/2026

The XVI ET Symposium has wrapped up in Aachen! Five days at RWTH Aachen University, 250 contributions, 500+ participants, lively discussions, posters, social activities, and a growing ET community. Thank you to everyone who joined us - on site and online. Next stop: Prague! @rwth.bsky.social

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Einstein Telescope @einsteintelescope.bsky.social · 14/06/2026

Tomorrow, we meet in Aachen. From 15 to 19 June, the international Einstein Telescope community gathers for the XVI ET Symposium, hosted by RWTH Aachen University. Follow us next week for highlights. #EinsteinTelescope #GravitationalWaves @rwth.bsky.social

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Einstein Telescope @einsteintelescope.bsky.social · 10/06/2026

News from the #GravitationalWaves world. The latest LIGO–Virgo–KAGRA catalog brings the total number of detected signals to 390. 3 highlights: record sky localization, the clearest signal yet, and new evidence for “second-generation” black holes. With ET, much more will come. Read: lnkd.in/dKuuQs4r

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Einstein Telescope @einsteintelescope.bsky.social · 29/05/2026

📸 #et_snapshot From Maastricht to Erice, the Meuse-Rhine Euroregion, Perugia and Lusatia, the Einstein Telescope community is moving forward through education, site studies, outreach and international collaboration. Read more: shorturl.at/bzUO2

Exterior view of the CAOS building, the Centro Applicazioni Onde gravitazionali e Sismologia, under a bright sky.

A large group of participants posing for a photo in front of a historic stone building with an arched entrance.

A quiet rural landscape with a dirt road running beside green fields and trees under a bright blue sky.

A group of people standing in a bright hall, holding a poster that reads “The art of working together.”

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Einstein Telescope @einsteintelescope.bsky.social · 12/05/2026

ET-COMPASS 🧭, a new €1.5M EC-funded project, will launch in early 2027 to support the Einstein Telescope’s path to implementation by strengthening governance, costing, operations, membership growth and partnerships. Thanks to all partners! Read more: lnkd.in/gsUCWXN #HorizonEurope #ESFRI

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Einstein Telescope @einsteintelescope.bsky.social · 07/05/2026

The ET-PP Annual Meeting brought the Einstein Telescope community together in Barcelona on 5–7 May to review progress, align ongoing work and discuss the transition beyond ETPP. A lot is still ahead, but EU support, ESFRI’s strategic framework and European cooperation have built a strong foundation.

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Einstein Telescope @einsteintelescope.bsky.social · 29/04/2026

#ET_tech The Einstein Telescope is not only a future gravitational-wave observatory — it’s a huge tech challenge. At CERN, experts and industry met to discuss ET’s vacuum & cryogenic systems: 120 km of ultra-high-vacuum pipes and mirrors cooled to 10–20 K. More: shorturl.at/KAHV9

Large cylindrical metal beam tube sections arranged on yellow supports inside an industrial facility, with additional tube sections and equipment in the background.

Bright yellow lifting equipment and support structures inside a large industrial hall, with metal components and overhead piping visible in the background.

View through the inside of a large polished metal tube, showing circular seams, reflections, and a support structure at the far end.

Speaker introducing a presentation titled “The Einstein Telescope beam tube vacuum system” during the ET Vacuum and Cryogenics Industrial Workshop, with the slide projected on a large screen.

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Einstein Telescope @einsteintelescope.bsky.social · 18/04/2026

From Amsterdam to Rome, Maastricht and Turin, ET kept moving this week - across computing, site studies, industry and public engagement. Read the full #ET_Snapshot update: www.linkedin.com/feed/update/...

A hand holding two Einstein Telescope postcards in front of a blue banner for the ET Industry Computing Workshop 2026.

Group photo of workshop participants standing behind rows of orange chairs in a bright indoor atrium.

Rows of small white sensor units arranged across a grassy field while several people install or inspect them during an outdoor test.

Group photo of participants standing outside the Fisica building at the Istituto di Fisica Guglielmo Marconi.

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Einstein Telescope @einsteintelescope.bsky.social · 08/04/2026

Work has begun on a site-independent report comparing Einstein Telescope geometries: a triangular design vs. a dual L-shaped design. The analysis covers five aspects: scientific added value, risk, costing, governance, and socio-economic impact. Read more: einsteintelescope.eu/news/towards...

Side-by-side 3D schematic renderings of two underground Einstein Telescope layout options on a light grey background: a triangular three-arm configuration on the left and a two-L-shaped configuration on the right, both shown as semi-transparent tunnel networks with coloured internal structures.

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Einstein Telescope @einsteintelescope.bsky.social · 07/04/2026

#ET_snapshot Across Europe, Einstein Telescope is moving forward: policy meetings, site studies in Sardinia, new tech, AI for data analysis, and a photo exhibition linking science with local communities. Full info: shorturl.at/Tfk3w Photos: ET Italy, JPE, ET EMR

Solar-powered monitoring station installed in a grassy hillside landscape, with a small instrument mounted on a pole beside a solar panel.

Panel discussion at the European Parliament with speakers seated at a long table before an audience, during an Einstein Telescope event.

Close-up of a precision metal vibration-isolation device with a cylindrical calibration weight mounted on top, photographed against a grey background.

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Einstein Telescope @einsteintelescope.bsky.social · 26/03/2026

ETO and ESA have launched a collaboration on cost estimation for the Einstein Telescope, formalised in January 2026. A meeting at ESTEC on 24 March marked its strategic start. Read the interview: shorturl.at/rjnUo #EinsteinTelescope #ESA @technology.esa.int

A group of nine people pose outside an ESA building beneath an ESA flag, standing in front of the curved wooden-and-glass facade.

Three people stand smiling in front of a large ESA mural showing a futuristic Moon base, astronauts, spacecraft, and Earth in the background.

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Einstein Telescope @einsteintelescope.bsky.social · 23/03/2026

Today, as Michele Punturo and Harald Lück complete their mandate as spokesperson team of the Einstein Telescope Collaboration, we thank them for their years of leadership, vision and dedication. einsteintelescope.eu/news/2730/

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Einstein Telescope @einsteintelescope.bsky.social · 20/03/2026

#ET_industry 📢 Save the date: 14–15 April 2026 at Nikhef Join the ET Industry Computing Workshop 2026 to explore how emerging computing technologies can support the scientific ambitions of ET. Registration deadline: 7 April 2026 More info: indico.cern.ch/event/160573...

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Einstein Telescope @einsteintelescope.bsky.social · 17/03/2026

The Einstein Telescope Collaboration has appointed Michele Maggiore as Spokesperson and Angélique Lartaux as Deputy Spokesperson. The Spokesperson is a key representative of the Collaboration and helps guide its scientific and strategic work. Full announcement: lnkd.in/d6q4e6B3

Portrait of a smiling man standing outdoors in front of a mountain landscape under a bright blue sky with scattered clouds.

Black-and-white portrait of a woman with glasses, smiling indoors in a technical or laboratory setting with equipment in the background.

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Einstein Telescope @einsteintelescope.bsky.social · 09/03/2026

#ET_snapshot 🔭 This week: governance, site selection, innovation, outreach and communication all moved ET forward. Full post on LinkedIn: www.linkedin.com/feed/update/... EinsteinTelescope

Aerial view of a wide rural landscape in Lusatia, with green fields, narrow roads, patches of forest and a reflective lake under a cloudy evening sky.

Meeting in Dresden
Participants sit around a long conference table during an official meeting in a bright formal room, with a presentation screen and flags visible at the far end.

ET Cristal lab in Liege.
Four people in blue cleanroom suits stand beside a large circular metallic component covered with pink protective film inside a technical facility.

Visit to EGO.
A group of nine people wearing blue shoe covers stands inside a research hall during a guided visit, with large scientific equipment visible in the background.

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Einstein Telescope @einsteintelescope.bsky.social · 26/02/2026

Einstein Telescope keeps growing 🌍✨ ~1,800 people across 30+ countries (90+ RUs, 260+ institutes). Welcoming a new Czech team: FZU 🇨🇿 - bringing laser/optics + software know-how. Full story on LinkedIn: www.linkedin.com/feed/update/... Group photo by: DZA / Paul Glaser

A long, rectangular multi-storey building with a pink facade and rows of windows stands beside a quiet road and grassy area under a clear blue sky.

A large group of formally dressed people pose for a photo outside an ornate historic building entrance, while a cyclist rides past in the foreground on a cobblestone street.

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Einstein Telescope @einsteintelescope.bsky.social · 24/02/2026

Another busy week for #ET: Rome workshops on sustainability + early-career science, ET-SUnLab tender published, Einstein Academy students kick off, and ET-MEROPE works on correcting thermal beam distortions. Full roundup: www.linkedin.com/feed/update/...

Large group photo of conference participants standing in a cobblestone courtyard, with an arcaded, pale peach historic building surrounding the space. The group - about 40 people, many wearing name badges - poses in a line in front of a central doorway under bright afternoon sunlight and a clear blue sky.

A group of students gathered around a table covered with LEGO pieces in a workshop/lab space, collaborating on a hands-on build activity.

Silhouettes of audience members seated in a dark room, watching a large dome-like projection of a star-filled, cosmic scene overhead.

A large lecture hall with tiered wooden benches, filled with students and attendees seated with laptops and notebooks, listening attentively during a talk.

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Einstein Telescope @einsteintelescope.bsky.social · 11/02/2026

Today, 11 February, #GW stands for two things: #GravitationalWaves 〰️ and #Girls&Women ❤️. We mark 10 years since the first GW detection announcement (11 Feb 2016) and the International Day of Women and Girls in Science. Both began in 2015 (GW150914). ✨

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Einstein Telescope @einsteintelescope.bsky.social · 02/02/2026

📸#ET_snapshot | What’s been happening around the Einstein Telescope lately 👇 shorturl.at/1Ewzv 📌 More updates + opportunities: lnkd.in/dH3xYPkx

A worker in a high-visibility jacket uses a laptop connected to measurement equipment housed in an open wooden box outdoors.

Three officials seated at a wooden desk sign documents in a council chamber with red chairs and flags behind them.

Aerial architectural rendering of a modern multi-wing research building surrounded by trees and campus buildings, with people walking in the courtyard.

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Einstein Telescope @einsteintelescope.bsky.social · 28/01/2026

🌟 Why ET goes underground: to escape surface noise (incl. Newtonian noise) and detect incredibly faint #gravitationalwaves. New article: facility concept, safety, and what it’s like to work below ground. Read: lnkd.in/dwweVX29

A long, cylindrical underground tunnel lined with lights, with large pipes and cables running along the walls and ceiling toward a distant vanishing point.

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Einstein Telescope @einsteintelescope.bsky.social · 21/01/2026

Einstein Telescope infrastructure & safety depend strongly on the future site 🗺️🛡️. On 19–20 Jan 2026, ETO, candidate host consortia and CERN met to exchange key info 🤝, with additional experts joining online 💻 @cern.bsky.social

A group poses in a lecture hall in front of a projector screen showing a video-call grid, with two large monitors on either side.

A group stands in an underground technical area beside a large metallic pipe with a copper strip and fittings; the photo is rotated sideways.

Participants sit around a long conference table while a presenter points to a slide titled ‘Personnel transport (evacuation means)’ projected at the front.

People gather around a guide in an industrial hall next to long cylindrical metal equipment under yellow overhead support frames.

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Einstein Telescope @einsteintelescope.bsky.social · 15/01/2026

📢 16–17 Feb 2026 | Sapienza University of Rome Workshop: “Einstein Telescope Research Infrastructure: Challenges and Long-Term Sustainability” Who it’s for: researchers, tech & industry, LCA, smart energy & logistics, sustainable procurement, etc. 🗓️ Register by: 1 Feb 2026 ➡️ shorturl.at/y36hC

3D cutaway rendering of a large underground industrial/scientific hall with multiple tall cylindrical tanks and blue vertical structures connected by horizontal piping; small groups of people on a raised walkway provide scale, and a lower level shows equipment rooms. Text in corner: “Photo Credit: Marco Kraan / Nikhef.”

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Einstein Telescope @einsteintelescope.bsky.social · 13/01/2026

📸 #ET_Snapshot: Recent ET highlights - ERC “GLOW” to decode lensed GW wave-optics; AI “Deep Loop Shaping” to cut interferometer control noise; new planetarium film preview; students reimagine eco-integrated ET design. More: www.linkedin.com/feed/update/...

Panel discussion on a stage in front of an audience; several speakers seated under stage lighting and black curtains.

Three students seated at a table with an architectural model and design boards; large poster labeled “Soil as a Sensor” on the wall behind them.

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Einstein Telescope @einsteintelescope.bsky.social · 05/01/2026

2026 is opening with many options for early-career researchers interested in Einstein Telescope science — from workshops and international schools to training resources you can access anytime.✨ 👉 Check ET page for more opportunities: shorturl.at/3wjE6 Photo: SIGRAV International School 2026

Illustration of a binary system emitting concentric gravitational-wave ripples in the sky above a sunlit coastal town with terracotta rooftops, a domed church, and steep green cliffs along a calm blue sea.

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Einstein Telescope @einsteintelescope.bsky.social · 23/12/2025

Happy Holidays! Best wishes from the Einstein Telescope community!

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Einstein Telescope @einsteintelescope.bsky.social · 17/12/2025

A check-in moment🤝: Einstein Telescope Organisation and CERN met to align on shared objectives for ET. From vacuum and materials to manufacturing, civil engineering and safety, CERN’s engineering expertise supports key ET activities — and opens the door to powerful synergies✨.

Inside a long technical hall, two people walk alongside a large metallic cylindrical beam tube section; an overhead yellow crane spans the corridor.

Two people inspect a large beam tube up close as one points to a yellow lifting fixture suspended above the tube.

A wide view of the beam tube pilot area showing a yellow support frame, equipment on pallets, and long rows of pipes and cables running along the hall.

A presenter speaks at the front of a meeting room while attendees sit at desks with laptops; a large wall screen shows slides and a video call interface.

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Einstein Telescope @einsteintelescope.bsky.social · 12/12/2025

📢 Save the date: 21–22 Apr 2026 | CERN, Geneva — ET Vacuum & Cryogenic Industrial Workshop. Two days of technical exchange on UHV beam pipes, large components & ET-LF cryogenics. Companies welcome + flash talks. Register: indico.cern.ch/event/160448... #ET_tech

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Einstein Telescope @einsteintelescope.bsky.social · 28/11/2025

📸 #ET_Snapshot So much is happening across Europe around the Einstein Telescope right now — new milestones on site studies, deep-tech innovation, and political support are landing almost daily. Full roundup here 👉https://shorturl.at/jQSyr

Two researchers working on an outdoor measurement cabinet at the Lusatia candidate site near Bautzen, surrounded by fields and winter trees.

Visitor wearing a VR headset at Space Tech Expo Europe, standing in front of an Einstein Telescope booth display reading ‘A new window on the universe.

Technician in a lab watches a large cryostat component being lifted by an overhead crane inside a clean industrial workspace.

Speaker presenting at an ET@INGV event in Rome, with Einstein Telescope Italy banners and an audience seated in a conference hall.

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Einstein Telescope @einsteintelescope.bsky.social · 27/11/2025

#ET_young ✨ Meet Alexandre Lacroix, mechanical engineer at LAPP designing the 120 km ultra-high-vacuum beam tube for the Einstein Telescope. From CERN vacuum tech to spiral-reinforced tubes & rock climbing, he keeps ET both stable and adventurous! Read more: shorturl.at/8c2AZ

Portrait of a man in an orange T-shirt wearing a grey backpack harness with a blue carabiner, standing with arms crossed against a plain light background.

Large cylindrical metal vacuum vessel or prototype lying horizontally on a workshop floor, clamped by several circular supports and threaded rods with bolted end caps.

Workbench in a mechanical workshop with a laptop, a red articulated coordinate-measuring arm, and a large metal ring on supports, alongside technical drawings and notes used for quality control.

Finite element eigenvalue buckling simulation of a long cylindrical tube between two supports, colored from blue to red to show total deformation values along the length.

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Einstein Telescope @einsteintelescope.bsky.social · 22/11/2025

Autumn ET Collaboration workshops boosted ET tech: ET-LF TM Tower Integration (Isola d’Elba) refined the low-frequency test-mass tower, super-attenuator control, cryostat interface & baseline steps. MAD25 (Berlin) united GW, materials & industry to develop crystals for ultra-sensitive components.

Three photos from a conference: a crowded lecture room with attendees seated and listening to a presentation; a poster session where participants talk in front of display boards; and a coffee-break area with people networking near a table of snacks and drinks, plus a small group discussing a poster beside a whiteboard.

Group photo of the workshop participants on an outdoor terrace: about thirty people are standing and sitting in several rows, many wearing name badges on lanyards. In the background are green hills under a bright sky and a distant line of sea; a sunny day with a panoramic view.

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Einstein Telescope @einsteintelescope.bsky.social · 17/11/2025

🚀 GWECS Job Fair 2025! We’re collecting job offers for the upcoming online fair connecting early-career GW scientists with employers. Submit your openings: shorturl.at/4siMH More details soon! ET job opportunities: lnkd.in/d9S2-sRj

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Einstein Telescope @einsteintelescope.bsky.social · 15/11/2025

🌟 Wrapped up the ET Annual Meeting in Opatija! Four days of plenaries, sessions, collaboration, and community events come to an end. Thank you to everyone for your talks, posters, discussions, and ideas shaping the next steps of ET. ✨ Together we build the future of GW astronomy! #ET_meeting

A large group of Einstein Telescope Annual Meeting participants gathered indoors for a group photo, standing closely together and smiling at the camera. The photo is taken from an elevated viewpoint in a bright lobby with posters on the wall and large windows in the back.

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Einstein Telescope @einsteintelescope.bsky.social · 11/11/2025

The 4th Einstein Telescope Annual Meeting has started in Opatija, hosted by the University of Rijeka. Over the next four days, participants will discuss key aspects of the ET collaboration and design — shaping the future of #gravitationalwave research.

Speaker presenting at the opening session of the 4th Einstein Telescope Annual Meeting in Opatija, with a slide titled “Do we master the ET technologies?” shown on a large screen. The audience listens and takes notes on laptops.

Prof. Rajka Jurdan from the University of Rijeka speaking at the opening of the 4th Einstein Telescope Annual Meeting, with a welcome slide displayed on screen and audience members seated in front.

Participants seated in red auditorium chairs during the 4th Einstein Telescope Annual Meeting, attentively following the presentations and taking notes on laptops and tablets.

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Einstein Telescope @einsteintelescope.bsky.social · 08/11/2025

📸 ET Snapshot: Highlights from this week — progress in Sardinia’s feasibility assessment, the BeamPipes4ET project, the ET Roadshow launch in Flanders, and local engagement across the EMR region. Read more: url-shortener.me/92Z9 #EinsteinTelescope #Science #ResearchInfrastructure

Visitors, including children and adults, experience virtual reality headsets at an interactive Einstein Telescope exhibition, surrounded by science-themed displays.
Credit: Einstein Telescope EMR

Participants attend a formal Einstein Telescope meeting in a conference room, listening to a speaker presenting slides on a large screen at the front.
Credit: Einstein Telescope Italy

A group of people stand and smile during a meeting in a bright office room, with a large image of the Einstein Telescope concept on the wall behind them.
Credits: Andreas Schmitter / RWTH Aachen University

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Einstein Telescope @einsteintelescope.bsky.social · 31/10/2025

Einstein’s theory passes another test — and black holes reveal new secrets. The latest LIGO-Virgo-KAGRA results uncover rare, fast-spinning mergers that may be second-generation black holes, born from earlier cosmic encounters. 💫 Image: Carl Knox, OzGrav #EinsteinTelescope #GravitationalWaves

An artistic visualisation of two black holes merging in deep space. The smaller black hole orbits and spirals into the larger one, surrounded by a glowing orange and red accretion disk, releasing intense energy and gravitational waves across the dark cosmic background.

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Einstein Telescope @einsteintelescope.bsky.social · 22/10/2025

🌍 Lusatia joins as the 3d candidate site for ET! After the June 2025 BGR meeting, Lusatia (Saxony, 🇩🇪) has officially become a candidate location — alongside Sardinia 🇮🇹 and the Euregio Meuse-Rhine 🇧🇪🇩🇪🇳🇱. Preparatory studies are underway, led by Christian Stegmann (DESY). shorturl.at/HwaRq

A 3D-rendered visualization of the underground Einstein Telescope facility. The image shows a large, futuristic tunnel with tall cylindrical vacuum chambers and interconnected laser arms extending into the distance. Small human figures are visible for scale, illustrating the massive size of the structure.

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Einstein Telescope @einsteintelescope.bsky.social · 17/10/2025

Meet Ulyana Dupletsa, postdoc at HEPHY in Vienna 🌍 She developed key tools for ET performance studies and now helps coordinate science case analyses. 💬 “It’s inspiring to be part of a community shaping the future of gravitational-wave astronomy.” #ET_young #ResearchInfrastructures #ET_women

A young woman with long brown hair sits at an outdoor café table, smiling softly at the camera.

A young woman in a gray sweater and jeans stands smiling on a platform with metal railings, in front of long arms of a scientific observatory building extending into the distance under a bright blue sky with scattered clouds.

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Einstein Telescope @einsteintelescope.bsky.social · 10/10/2025

🚀 Big weeks for the #EinsteinTelescope community: 🔹 Cosmic Explorer – ET Beamtube Workshop (LIGO Hanford, US) 🔹 #CoMET lab launch (Rovigo, IT) 🔹 Orosei workshop on Sos Enattos site 🔹 ET EMR work on sustainability Tech, collaboration & future-ready! ✨

A large tunnel boring machine seen head-on inside a circular underground tunnel, with workers in helmets standing nearby.

Officials wearing white safety helmets cutting a ceremonial ribbon at the inauguration of the CoMET laboratory, with a presentation screen in the background.

A group of workshop participants posing in front of the LIGO Exploration Center building under clear skies.

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Einstein Telescope @einsteintelescope.bsky.social · 02/10/2025

#EuropeanResearchersNight lit up cities across Europe this past weekend 26th September 🌍✨ The Einstein Telescope and gravitational waves took center stage in many presentations and activities — because they’re simply that exciting! 🚀🔭 Some highlights👇

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Einstein Telescope @einsteintelescope.bsky.social · 25/09/2025

#ET_young #ET_team Meet Carlo Scarcia: since 2021 he’s been designing the ET beam pipe vacuum system, cutting costs with smarter materials & methods. Now leading vacuum tests at the ET pilot sector at @cern.bsky.social. @rwth.bsky.social

Engineers at CERN install a large cylindrical stainless-steel beam pipe section, suspended by a crane, as part of the Einstein Telescope pilot sector vacuum system.

Researcher at CERN stands next to a shiny cylindrical beam pipe prototype, looking through its interior, which shows a series of concentric ridges.

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Einstein Telescope @einsteintelescope.bsky.social · 18/09/2025

ETO’s 3rd General Meeting took place in Isola d’Elba 🇮🇹 — a key moment to reflect on progress, strengthen collaborations & set the course toward the #EinsteinTelescope. ETO is the organisation coordinating the design, planning & implementation of this next-gen observatory. #ETO2025

Group photo of participants at the ETO General Meeting in Isola d’Elba, Italy, September 2025. Around 30 people stand outdoors by a pool with palm trees and the sea in the background, wearing conference badges and blue sunglasses.

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Einstein Telescope @einsteintelescope.bsky.social · 12/09/2025

🌌 Ten years ago today, gravitational waves were detected for the first time. Now, the LIGO–Virgo–KAGRA network is celebrating the anniversary with its clearest detection yet: GW250114, a black hole merger that confirmed Hawking’s Black Hole Area Theorem. #GW10Years

Image: LIGO/J. Tissino (GSSI)/R. Hurt (Caltech-IPAC)
This plot shows gravitational-wave signals recorded by the LIGO Hanford detector almost ten years apart. The top shows data from LIGO's first-ever detection of gravitational waves, an event called GW150914, captured in 2015. The bottom shows the signal known as GW250114, captured in 2025. Both events involve colliding black holes about 1.3 billion light-years away with masses between 30 to 40 times that of our Sun. The purple line shows the data, which are a combination of the signal plus background detector noise. The noise comes from a variety of sources, including seismic motions that jiggle giant mirrors inside LIGO. The green line shows the best-fit prediction from general relativity for each signal. The much lower noise seen today is thanks to cutting-edge improvements made to the LIGO detectors that hush unwanted noise.

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