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IceCube Neutrino Observatory
@icecubeneutrino.bsky.social
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The IceCube Neutrino Observatory is an array of optical sensors located in Antarctic ice that detects the presence of neutrinos.

https://icecube.wisc.edu/
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Congrats to IceCube PI Francis Halzen, recipient of the 2026 APS Medal for Exceptional Achievement in Research! 🏅

His leadership of IceCube and its discoveries have made significant contributions to the field of neutrino astrophysics.

www.aps.org/apsnews/2025....
A graphic showing a headshot of Francis Halzen crossing his arms for the APS Medal for Exceptional Achievement in Research 2026.
December 8, 2025 at 4:23 PM
icecubeneutrino.bsky.social
📍Ever wonder about trash at the South Pole? Almost everything is sorted, packaged, and shipped back off the continent. Last week began with a major cleanup at the IceCube Lab (ICL).

Read more about week 47 ➡️ tinyurl.com/Week47AttheP...

📸:Alicia Fattorini, IceCube/NSF
December 5, 2025 at 7:49 PM
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📍Last week, our new winterovers, Alicia and Camille, had a busy agenda that consisted of computer maintenance and firmware upgrades as well as some snowmobile training!

Read more about week 46 ➡️ tinyurl.com/Week46atTheP...

📸Alicia Fattorini, IceCube/NSF
December 1, 2025 at 9:11 PM
icecubeneutrino.bsky.social
Upgrade Update #5

The Upgrade project continues to make good progress. The drill camp now has two tower operations sites, a wrapped-up drill supply hose reel, and the enhanced hot water drill in position.

Read more ➡️ icecube.wisc.edu/news/icecube...

📸: Kurt Studt, IceCube/NSF
A group of people standing in front of a hose reel at the South Pole Towers in front of the IceCube Lab at the South Pole
December 1, 2025 at 8:22 PM
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📍❄️🐧 Happy #AntarcticaDay! Sixty-six years ago today, the Antarctic Treaty designated the continent as a “natural reserve, devoted to peace and science.” Today, nearly 60 nations recognize this treaty.
Happy Antarctica Day! From the IceCube Collaboration
December 1, 2025 at 1:16 PM
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Upgrade Update #4

Last week, IceCubers moved the drill tower and operations structures into place! The location is over hole 87, which will be the first Upgrade hole.

Read more➡️https://icecube.wisc.edu/news/icecube-gen2/2025/11/upgrade-update-4/

📸: Delia Tosi, IceCube/NSF
November 24, 2025 at 6:37 PM
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📍This past week at the Pole has been nothing short of action-packed; the changing of the (IceCube winterover) guard, Upgrade activities at full steam ahead, and lots of arriving cargo!

Read more about week 45
➡️ icecube.wisc.edu/news/life-at...

📸:Alicia Fattorini, IceCube/NSF
November 21, 2025 at 5:43 PM
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We are thrilled to introduce our winterovers for the 2025-2026 season, Alicia Fattorini and Camille Parisel! 👋 They spent a week training with Ilya and Joe before relieving them of their duties.

Check out the Q&A: icecube.wisc.edu/news/collabo...

📸 Emmett Krupczak
A group of people posing for a photo at the South Pole Station
November 20, 2025 at 2:29 PM
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Upgrade Update #3

Eight more arrivals last week brought the South Pole IceCube population up to 29!

Read more ➡️ icecube.wisc.edu/news/icecube...

📸: Vivian O'Dell, Emmett Krupczak, Chanda Sinsabvarodom, IceCube/NSF
November 18, 2025 at 10:00 PM
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Join safety officer Sarah Bouckoms LIVE today @ 4 PM EDT, where she will describe her work on the IceCube Upgrade project! 🧊📷✨

This is part of a 12-week virtual exchange program in partnership with Exploring By The Seat Of Your Pants and Reach the World.

www.youtube.com/live/NT1_mUo...
Detecting Cosmic Messengers Live From the South Pole
Explorer Sarah Bouckoms is a scientist and educator who has worked in Antarctica since 2008. This Antarctic summer, she’s fulfilling a lifelong dream by trav...
www.youtube.com
November 18, 2025 at 5:40 PM
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It's not a rainbow, it's an ice crystal bow! 🌈❄️ Looks like a beautiful day of sunny skies and frigid air at the South Pole!

📸: Lea Schlickmann, IceCube/NSF
November 18, 2025 at 4:01 PM
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This month's Voices of IceCube feature is Riya Shah, a Drexel PhD student! 📣

Read the interview ➡️https://icecube.wisc.edu/voices-of-icecube/2025/11/riya-shah/

#VoicesofIceCube #IceCubeObservatory #SouthPole #Neutrinos #Astrophysics #Science #IceCubeStation
November 17, 2025 at 2:04 PM
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🗓️ The official IceCube Calendar for 2026 is now available for download! You can find the calendar—featuring shots taken by some of our former winterovers, Connor Duffy, Ilya Bodo, and Kalvin Moschkau—linked below!

icecube.wisc.edu/news/outreac...
November 15, 2025 at 3:01 PM
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🔔📜 IceCube paper submitted to ApJ!

We present a search for clustering between a catalog of galaxies and IceCube data using the two-point angular cross-correlation. We did not find any significant clustering between the galaxies and neutrinos.

Story ➡️ icecube.wisc.edu/uncategorize...
The density of unWISE-2MASS galaxies in the sky. The gray region combines a ±10° region surrounding the galactic plane and a Planck dust map. The Large and Small Magellanic Clouds are masked as well. Credit: IceCube Collaboration
November 14, 2025 at 9:00 PM
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📍Five planes arrived at the South Pole Station—many of the new arrivals were IceCubers! Our two new winterovers, Camille and Alicia, were welcomed out on the ice by outgoing winterovers, Joe and Ilya.

Read more about week 44
➡️ tinyurl.com/IceCubeWeek44

📸: Jennifer Wang, IceCube/NSF
November 14, 2025 at 3:47 PM
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Happy #InternationalCosmicDay! ✨🌌 Organized by DESY and IPPOG, International Cosmic Day is an annual educational event exploring questions surrounding cosmic rays!

More info ➡️https://icd.desy.de/about/

📸: International Cosmic Day
November 13, 2025 at 5:17 PM
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🔔📜 IceCube paper submitted to PRD!

We searched for neutrinos from dark matter annihilation using IceCube’s DeepCore detector. A significant excess of neutrinos was not found, and new limits were set on dark matter interactions.

Story ➡️ icecube.wisc.edu/news/researc...
Upper limit on the annihilation cross section for DM annihilating into a pair of electron neutrinos as a function of the DM mass.
November 12, 2025 at 7:28 PM
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Upgrade Update #2

The crew spent a lot of time shoveling to get most of the buildings in the drill camp out. While the crew continues preparations, the South Pole Overland Traverse is making good progress.

Read more ➡️ icecube.wisc.edu/news/icecube...

📸 Emmett Krupczak, IceCube/NSF
A group of people shoveling snow around some buildings at the South Pole.
November 11, 2025 at 8:06 PM
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📍The first Basler plane bringing the summer crew has finally arrived at the Pole! It brought 12 new arrivals and left with three of the winterovering crew.

Read more about week 43 ➡️https://icecube.wisc.edu/news/life-at-the-pole/2025/11/week-43-at-the-pole-5/

📸:Ilya Bodo, IceCube/NSF
November 6, 2025 at 2:02 PM
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Upgrade Update #1

Before the first group of IceCubers arrived at the South Pole, they examined the staging area for the cargo transport at McMurdo Station. This was to confirm that the Upgrade cable assemblies were ready.

Read more ➡️ icecube.wisc.edu/news/upgrade...

📸 Vivian O'Dell
A bunch of cargo on a transport
November 5, 2025 at 7:43 PM
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The first wave of IceCubers has arrived at the South Pole aboard a Lockheed C-130 Hercules or "Herc" as they call it.

As more IceCubers arrive at the Pole, we'll start sharing progress on the IceCube Upgrade! ❄️✨

📸: Vedant Basu
November 4, 2025 at 3:28 PM
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📢 Ever wonder what it's like to work at one of the coolest places on Earth? Now's your chance! ❄️ 🧊

Winterover applications for the 2026-27 season are NOW OPEN! Applications are due January 15, 2026.

Find out more and apply here ➡️ icecube.wisc.edu/jobs/
November 3, 2025 at 6:05 PM
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Happy first of the month from this Antarctic crew--or should we say, waddle!🐧
November 1, 2025 at 9:00 PM
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📍Though the uncooperative weather at the Pole may have delayed some flights this week, the first fresh produce delivery the winterovers have seen in nine months finally arrived at the station!

Read more about week 42 ➡️ icecube.wisc.edu/news/life-at...

📸:Ilya Bodo, IceCube/NSF
October 31, 2025 at 6:28 PM
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The first wave of IceCubers has just arrived at McMurdo Station from Christchurch, NZ, aboard a USAF C-17. Soon, they will journey to the South Pole for the 3rd field season of the IceCube Upgrade, where they will drill seven holes through Antarctic ice.

📸 Vedant Basu
A group of people getting off a C-17 plane at McMurdo Station
October 29, 2025 at 12:30 PM