Einstein Telescope
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einsteintelescope.bsky.social
Einstein Telescope
@einsteintelescope.bsky.social
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Official profile of the Einstein Telescope. The project "Preparatory Phase for the Einstein Telescope Gravitational Wave Observatory" has received funding from the EU’s Horizon Europe INFRADEV Programme under GA No 101079696
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einsteintelescope.bsky.social
📸 #ET_snapshot: quick ET updates👇

🇪🇺 EMR magnetotellurics (pls don’t touch field gear)
🇮🇹 Sardinia agreement to boost the Sos Enattos hub
🇩🇪 HAFUN breaks ground in Hamburg
🇳🇱 Dutch coalition reaffirms support + #ETpathfinder
🇮🇹 CoMET coatings lab within #ETIC
Details: www.linkedin.com/feed/update/...
Aerial architectural rendering of a modern multi-wing research building surrounded by trees and campus buildings, with people walking in the courtyard. Three officials seated at a wooden desk sign documents in a council chamber with red chairs and flags behind them. worker in a high-visibility jacket uses a laptop connected to measurement equipment housed in an open wooden box outdoors.
February 2, 2026 at 3:28 PM
einsteintelescope.bsky.social
🌟 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.
January 28, 2026 at 2:14 PM
einsteintelescope.bsky.social
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.
January 21, 2026 at 4:00 PM
einsteintelescope.bsky.social
📢 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.”
January 15, 2026 at 12:14 PM
einsteintelescope.bsky.social
📸 #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.
January 13, 2026 at 2:10 PM
einsteintelescope.bsky.social
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.
January 5, 2026 at 3:53 PM
einsteintelescope.bsky.social
Happy Holidays!
Best wishes from the Einstein Telescope community!
December 23, 2025 at 1:35 PM
einsteintelescope.bsky.social
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.
December 17, 2025 at 10:51 AM
einsteintelescope.bsky.social
📢 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
December 12, 2025 at 12:55 PM
einsteintelescope.bsky.social
📸 #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.
November 28, 2025 at 8:39 AM
einsteintelescope.bsky.social
#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.
November 27, 2025 at 11:52 AM
einsteintelescope.bsky.social
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. Large group photo taken indoors at a research institute: around 35–40 conference participants of mixed genders stand and kneel in several rows, all wearing name badges and smiling at the camera. Behind them are posters on the wall and the “ikz” logo; the room has wooden floors, bright lighting, and a large potted plant by the windows on the right.
November 22, 2025 at 11:27 AM
einsteintelescope.bsky.social
🚀 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
November 17, 2025 at 3:35 PM
einsteintelescope.bsky.social
🌟 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.
November 15, 2025 at 4:09 PM
einsteintelescope.bsky.social
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.
November 11, 2025 at 9:12 AM
einsteintelescope.bsky.social
📸 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
November 8, 2025 at 10:21 AM
einsteintelescope.bsky.social
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.
October 31, 2025 at 11:17 AM
einsteintelescope.bsky.social
🌍 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.
October 22, 2025 at 2:25 PM
einsteintelescope.bsky.social
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.
October 17, 2025 at 10:18 AM
einsteintelescope.bsky.social
🚀 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.
October 10, 2025 at 3:08 PM
einsteintelescope.bsky.social
#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👇
October 2, 2025 at 12:57 PM
einsteintelescope.bsky.social
#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.
September 25, 2025 at 9:53 AM
einsteintelescope.bsky.social
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.
September 18, 2025 at 7:48 AM
einsteintelescope.bsky.social
🌌 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.
September 12, 2025 at 9:52 AM
einsteintelescope.bsky.social
The LVK collaborations released GWTC-4.0, adding 128 new #gravitationalwave events from O4a, including the most massive black hole merger yet. Explore the data and interactive plots here: media.ligo.northwestern.edu/gallery/mass...
Colorful chart of black hole and neutron star masses detected by LIGO–Virgo–KAGRA, showing hundreds of cosmic collisions.
September 2, 2025 at 10:17 AM