Scientists think dark matter might come in two forms A mysterious glow of gamma rays at the center of the Milky Way has long hinted at dark matter, but the lack of similar signals in smaller dwarf galaxies has cast doubt on that idea. Now, researchers p...

www.sciencedaily.com/releases/202...

With Artemis II due to splash down today, SNOLAB Research Group Manager Stephen Sekula explains what we learned from this important mission, and the promise of future missions. Listen here:
lnkd.in/eSz5dp9A

A graphic for DEAP-3600 featuring a purple gradient background, a faded photo of the detector on the left, and a white text box in the center. The text reads: “Dark matter search with the DEAP-3600 detector using the profile likelihood ratio method” and “arXiv.” The DEAP-3600 logo appears in the top right, and the email “deap3600-outreach@snolab.ca”

New DEAP-3600 results from SNOLAB. Using 790.8 live-days of liquid argon data, we set stronger limits on WIMPs - one of the leading dark matter candidates - and improved our view of where this invisible matter is not hiding.🕵️
Read: arxiv.org/pdf/2603.13965
@snolabscience.bsky.social

Two researchers in blue cleanroom suits, orange hard hats, and safety glasses work inside the DEAP-3600 detector infrastructure, surrounded by metal supports, cables, and tubing. One adjusts equipment connected to the detector while the other assists.

Behind the scenes: #DEAP3600 team members from Carleton are visiting the detector site to support hardware upgrades, including pumping out the argon dewar vacuum jacket. The overall plan is to slowly cool the acrylic vessel with injections of argon gas and prepare to deploy the dust removal system.

A long dinner table in a cozy, wood-paneled restaurant with warm pendant lights overhead. A large group of people sit on both sides of the table, smiling toward the camera, with plates, glasses, and menus spread out.

A screenshot of a Zoom meeting in grid view showing multiple participants on camera, one tile with a name only, and a few muted microphone icons visible. Participants appear in different rooms/backgrounds, suggesting remote attendance from various locations.

A group of people standing together in a bright lobby or hallway area. A sign for the Arthur B. McDonald institute is visible above a doorway in the background, and the group faces the camera as if posing for a meeting photo.

DEAP-3600 collaboration met again at Queen’s University, Kingston (17–20 Feb 2026). Global team reviewed detector status, analysis & operations, and set priorities for the months ahead. Stay tuned for progress and results!
@queensuresearch.bsky.social

DEAP-3600 highlights at WNPPC2026:
• Dark Matter Search Results from DEAP-3600 — Spencer Haskins, on behalf of the DEAP Collaboration (@carleton.ca)
• Poster: Current Status and Prospects of the DEAP-3600 Dark Matter Search — Jie Hu (@ualberta.bsky.social)

DEAP-3600 highlights at WNPPC2026:
• Expanding the Reach of Argon-Based Dark Matter Searches — Invited oral, Michela Lai (@queensuresearch.bsky.social)
• Nuclear Physics in Liquid Argon with DEAP-3600 — Peter Taylor ( @queensuresearch.bsky.social)

Banner for the Winter Nuclear & Particle Physics Conference (WNPPC 2026) featuring a blue sky background with a snowy mountain photo. Large white text reads “Winter Nuclear & Particle Physics Conference” and “Banff, Alberta Canada,” with “WNPPC 2026” on the left beside a small snowboarding stick-figure icon and a long black horizontal line across the design.

DEAP-3600 featured at #WNPPC2026 (63rd Winter Nuclear & Particle Physics Conf.), Feb 12–15 in Banff, Alberta—Canada’s subatomic physics meeting spotlighting students & postdocs. Talks + poster covered argon dark matter and nuclear physics in LAr.
#conference
@snolabscience.bsky.social

Registration form - Open lecture | 13.02.2026 Join us for a special Astrocent Take Over celebrating the International Day of Women and Girls in Science 2026 and Meet the Women Exploring the Dark Matter’s Riddles! ✨ Hear presentations from researc...

In just two days, we will participate in an exciting event organised by @astrocent.bsky.social!

Join us for a celebration of the International Day of Women and Girls in Science 2026 and meet women exploring the dark matter’s riddles ✨

13.02.2026, 13:00 CET

Register: forms.gle/3SR2cqdWXmJw...

A person stands in front of a projected presentation slide in a classroom. The slide shows two cards side by side: a profile card labeled “Cheyanne Monk” with a photo and bullet points, and a “Project Card” titled “Space Elevator” with an image and project details.

Our colleague Cheyanne Monk presenting at the 13th Canadian Conference for Undergraduate Women & Gender Minorities in Physics at UBC Vancouver, 30.01-1.02.2026.
Many fantastic talks, career options, and discussions about EDI in the field... And beautiful UBC campus;)
#WomeninSTEM #CCUW*iP

Graphic announcement on a purple gradient background: left side shows a close-up photo of the DEAP-3600 detector interior; right side has a large white panel with the text “NEW PAPER” and “Phys. Rev. D.” A circular DEAP-3600 logo appears in the top-right corner, and “deap3600-outreach@snolab.ca” is written along the bottom.

Our new paper accepted in Phys. Rev. D!
We measured how radon daughters ²¹⁰Pb/²¹⁰Po diffuse in Nylon-6 - much faster at high humidity - informing ultra-low-background detectors for dark matter & neutrinos.
Read: doi.org/10.1103/jtn3...
#DEAP3600

Wanting to gain hands-on experience in a world-class underground science lab? SNOLAB is hiring for various student positions across many disciplines! Applications for the Summer 2026 term close soon and can be found here: www.snolab.ca/employment/s...

Person in a blue lab coat kneels beside an open electronics cabinet packed with multicolored wires, wearing clear safety glasses and an orange hard hat labeled “CHEYANNE,” holding a connector and looking at the camera.

Portrait of a person with short brown hair and a small nose ring, wearing a black pinstriped blazer over a burgundy top and a green pendant necklace, smiling slightly against a plain light-gray background.

Big congrats to our colleague Cheyanne Monk on the Undergraduate HQP Excellence Award granted through the McDonald Institute’s HQP Excellence Awards (HExA) program, recognizing her contributions in research (DEAP-3600), community building and science communication! 🎉
@mcdonaldinstitute.bsky.social

Inspiring numbers from @snolabscience.bsky.social !

Wishing you a new year full of bright moments and exciting results!
#darkmatter #2026 #DEAP3600

Purple gradient graphic with a photo of the DEAP-3600 detector on the left. On the right, a white box reads “CHECK OUT JOB OPPORTUNITIES” in large blue letters. The DEAP-3600 logo is in the top-right corner, and the contact email “deap3600-outreach@snolab.ca” appears at the bottom.

📢Check out job opportunities!
• Black Hills State University: tenure-track Asst Prof in Physics: shorturl.at/igoUX
• UC Riverside: tenure-track Asst Prof (experimental neutrinos/particle astro/cosmology/GW): shorturl.at/1cU4Y
#PhysicsJobs

@blackhillsstate.bsky.social @ucriverside.bsky.social

Scientific Seminar: MicroBooNE finds no evidence for a single sterile neutrino YouTube video by Fermilab

Neutrinos keep surprising us 👀
In their latest result, #MicroBooNE used one detector and two beams to test the idea of a fourth, “sterile” neutrino. Their data show no sign of it and rule out that model with 95% certainty.
Congrats to our colleagues at @fermilab.bsky.social & MicroBooNE!

Construction workers created two colossal caverns, each more than 500 feet long and about seven stories tall, for the gigantic particle detector modules of the Deep Underground Neutrino Experiment, hosted by Fermilab. A third cavern will house utilities for the operation of the detector. Photo: Matthew Kapust, Sanford Underground Research Facility

The upcoming LBNF-DUNE experiment will go even further, studying neutrinos to search for the answer to one of the most fundamental questions in science: Where did all the matter in our universe come from? (In other words: Why is there something rather than nothing?) 🧪🔭

aeon.co/essays/going...

Our Education and Outreach team is excited to be presenting at STAO Celebrates, the leading conference for science teachers in Ontario.

Don’t miss our session at 9am on Thursday, Nov. 27. We’re looking forward to connecting with educators and learning at #STAOCelebrates!

stao.ca/stao-celebra...

Young researcher giving a DEAP-3600 dark matter talk at CPAN Days, standing beside a slide titled “More physics with DEAP” in a full lecture room.

Guillermo Vera Díaz (CIEMAT) presented the latest #DEAP3600 status after its third liquid argon fill at #CPANDays (19–21 Nov), sharpening the search for #darkmatter and rare events within the Global Argon Dark Matter Collaboration.

❄️ Having a chill start to the week at SNOLAB!

SNOLAB uses a special technique to measure trace amounts of radon in infrastructure and experiments in the underground laboratory. This method, a radon assay, requires cryogenic temperatures to make it work.

📸 Photo by Gerry Kingsley

Four members of the DEAP-3600 Queen’s group stand smiling behind a table at the McDonald Institute. The table displays electronic equipment used for demonstrations. Next to them is a DEAP-3600 poster, and two members are holding 3D-printed models of the detector used to explain dark matter research.

🛡️⚔️ Four knights of #darkmatter from Queen’s team joined McDonald Institute for #DarkMatterDay on the 8 Nov, hosting a booth on #DEAP3600 & future liquid argon detectors 🔦✨ Our contribution to a global outreach initiative.
@mcdonaldinstitute.bsky.social @queensuresearch.bsky.social

Group photo of participants at the LIDINE 2025 conference seated in a large meeting room, smiling toward the camera. The conference banner reads “LIDINE 2025 – Light Detection in Noble Elements.”

A researcher gives a presentation at a conference, holding a microphone and a pointer while standing near a podium labeled “Sheraton Hong Kong Hotel.” A projected slide is partially visible in the background.

A researcher presents a talk titled “Optical modeling of pixelated digital SiPMs for ARGO” at the LIDINE 2025 conference in Hong Kong, standing beside a projected slide and speaking into a microphone.

Our team presented updates on the #DEAP-3600 experiment and progress toward #ARGO at #LIDINE2025 conference, held October 21–24 in Hong Kong. Talks by Susnata Seth and Asish Moharana showcased recent advances in dark matter detection.

Page of Belliner magazine featuring the article “Andare sottoterra per studiare il cielo” (“Going underground to study the sky”). The main image shows the spherical DEAP-3600 dark matter detector with multiple round photodetectors arranged in a geometric pattern.

Proud to share that a story on #darkmatter and the DEAP-3600 experiment has just been published in Belliner magazine 📰✨ A great opportunity to bring cutting-edge astrophysics closer to the public!
Practise your Italian😉👉 shorturl.at/mGcDh
#outreach

SNOLAB is hosting its third annual poster design contest to celebrate Dark Matter Day! Participants of any age are invited to design an original piece of visual artwork that explores the theme of dark matter. Learn more here: www.snolab.ca/poster-conte....

#DarkMatterDay

A young man in a blue and black checkered shirt, wearing a conference badge, poses smiling with one hand on his hip and the other resting on a large blue cylindrical experimental apparatus inside an underground tunnel with cables and lighting overhead.

👋 Welcome Ryan Curtis to the DEAP collaboration! He’s starting his MSc at Queen’s University (supervised by Michela Lai), focusing on radon adsorption in argon & SiPM detection in LAr. Ryan is also passionate about #outreach, co-running @ThePhysicsHouse on TikTok.
#DEAP3600team

A collage of photos showing scientists and engineers working at SNOLAB on the DEAP-3600 experiment. Team members in blue cleanroom suits and orange or white helmets are operating equipment, handling cryogenic systems, monitoring instruments, and connecting wires. The central images highlight the detector and filling system used for the liquid argon fill.

Fresh from the underground: the third argon fill at DEAP-3600 is now complete ✅. The detector is filled to full capacity and ready for the next steps!
Work continues at @snolabscience.bsky.social
#teamwork #darkmatter

A man with headphones smiles at the camera while holding a gray-and-white cat sitting on his chest. A map of Japan is visible on the wall in the background.

👋 Meet Peter Taylor — a new student joining the #DEAP3600 team! He’ll be working on designing the new cryostat to be built and tested at Queen’s University, and on low-level data analysis for one of the beta-backgrounds. Welcome, Peter! ✨
@queensuresearch.bsky.social

This photo, “Grace under pressure”, was taken by Mary Katherine Keown. The photographer had this to say about it: “Everything — including the coffee — is controlled at SNOLAB. The kind of precision that goes into experimentation at SNOLAB is almost super-human.”
#PhysPics25

Official TAUP 2025 conference banner: “19th International Conference on Topics in Astroparticle and Underground Physics, Xichang, Sichuan, China, 2025.8.24–8.30.”

Michal Olszewski presenting at TAUP 2025, standing at a podium with a slide titled “Plan” projected behind him.

DEAP-3600 was presented at #TAUP2025 (24-30.08, Xichang) - one of the most important events in our field🌌 New #darkmatter search results, solar neutrino measurements, and insights into supermassive gravitinos. Talks by Shawn Westerdale & Michal Olszewski.