📍The South Pole station has officially closed for the winter, and all the non-winter personnel have departed. Pictured are the last IceCubers to leave the Pole after a job well done! Read more about week 7 ➡️ icecube.wisc.edu/news/life-at... 📸:Camille Parisel, IceCube/NSF

Our @physrevlett.bsky.social paper on extremely-high-energy neutrinos made the 2025 Collection of the Year! 🎉 The study was led by IceCube collaborators Max Meier (@ICEHAP1) and Brian Clark (@UMDPhysics). Collection ➡️ promo.aps.org/prl2025 IceCube news ➡️ icecube.wisc.edu/news/researc...

This month's Voices of IceCube feature is Kareem Farrag, a postdoctoral researcher at the International Center for Hadron Astrophysics at Chiba University in Japan! 📣 Read the interview ➡️ icecube.wisc.edu/voices-of-ic... #VoicesofIceCube #IceCubeNeutrinoObservatory #SouthPole #Neutrinos

💝 Happy #ValentinesDay from IceCube! Got a sweetheart? A bestie? You can show that special someone what they mean to you this Valentine's Day with these IceCube valentines! Find these free downloadable valentines and more ➡️ icecube.wisc.edu/outreach/act...

📍Just like that, the Upgrade drill camp is all packed up! Last week, IceCube’s winterovers were busy with detector maintenance, freeze-in operations for the Upgrade strings, and other tasks. Read more about week 6 ➡️ icecube.wisc.edu/news/life-at... 📸 :Alicia Fattorini, IceCube/NSF

The IceCube Upgrade has been successfully deployed! 🎉 The Upgrade marks the first significant expansion of IceCube since its completion 15 years ago. Read about it here! ➡️ icecube.wisc.edu/news/press-r... 📸 credit: Colton Hill, IceCube/NSF #IceCubeUpgrade #neutrinos #Antarctica

Upgrade Update #15! This is the final Upgrade Update! The last field work tasks have been completed and all the Upgrade personnel have left or are scheduled to leave the South Pole! 🎉❄️👏 Read more ➡️ icecube.wisc.edu/news/icecube... 📸: Emmett Krupczak, IceCube/NSF #IceCubeUpgrade #Science

Yesterday, Francis Halzen received the 2026 @apsphysics.bsky.social Medal for Exceptional Achievement in Research! 🎉 Here are some behind-the-scenes photos from a video shoot featuring Francis! 🎥🎬 Watch the video ➡️ www.youtube.com/watch?v=lYwz... Read more ➡️ www.aps.org/apsnews/2025...

📍There was an open house at the IceCube Lab, which was a great success with lots of visitors and many questions. Also, last week at the Pole, a wedding! Read more about week 5 ➡️ icecube.wisc.edu/news/life-at... 📸: Alicia Fattorini, IceCube/NSF

Upgrade Update #14 The Upgrade season continues to wind down, with people packing cargo and winterizing the drill camp while commissioning progresses steadily on all six deployed strings. Read more ➡️ icecube.wisc.edu/news/icecube... 📸: Kurt Studt, IceCube/NSF

Join safety officer Sarah Bouckoms LIVE TODAY @ 1 PM CST, where she will describe her work on the IceCube Upgrade project this field season! 🧊📷✨ This is part of a 12-week virtual exchange program in partnership with @EBTSOYP and @ReachtheWorldco! exploringbytheseat.com/lessons/live...

📍 Those remaining at the Pole last week worked on winterizing the drill camp. The station also had a special visitor: US Senator Tammy Baldwin! Read more about week 4 ➡️https://icecube.wisc.edu/news/life-at-the-pole/2026/01/week-4-at-the-pole-6/ 📸:Alicia Fattorini, IceCube/NSF

Upgrade Update #13 The last of the Upgrade modules (here a D-Egg) have been deployed, and commissioning work is now in full swing! 👏 Read more ➡️ icecube.wisc.edu/news/icecube... 📸: Emmett Krupczak, IceCube/NSF #IceCubeUpgrade #Science

Wake up, babe, the new quietest spot on Earth just dropped 🤫🧊🌐 It's 2.5 km under the South Pole—and geologists have installed seismometers there that operate more quietly than the background rumblings of Earth itself. Read more about this cool project in @science.org : tinyurl.com/5n76jfht #science

📍The Upgrade season is winding down, and to celebrate, the group gathered in the gym for festivities before folks leave the Pole. Read more about week 3 ➡️ icecube.wisc.edu/news/life-at... 📸: Alicia Fattorini, IceCube/NSF

Upgrade Update #12 Last week the Upgrade team finished drilling the fifth hole and started in on the sixth! Read more➡️ icecube.wisc.edu/news/icecube... 📸: Erik Blaufuss, IceCube/NSF #IceCubeUpgrade #SouthPole

This month's Voices of IceCube feature is Sohyoun Yun Carcamo, a post-doc at Drexel University! 📣 Read the interview ➡️ icecube.wisc.edu/voices-of-ic... #VoicesofIceCube #IceCubeNeutrinoObservatory #SouthPole #Neutrinos #Astrophysics #Science

At IceCube, we understand the importance of mentorship and community! Which is why we're wishing everyone a happy #InternationalMentoringDay.

South Pole Acceptance Testing (SPAT) has officially concluded! 🎉 Over 800 devices underwent a series of functionality tests to verify their performance before being deployed into the ice! 🧊 Thank you to everyone who contributed! 📸: Colton Hill, IceCube/NSF #IceCubeUpgrade #SouthPole

📍Some rare snowfall graced the South Pole last week as greenhouse training began and our team continued working on the Upgrade project, preparing the final strings for deployment. Read more about week 2 ➡️ icecube.wisc.edu/news/life-at... 📸:Camille Parisel, IceCube/NSF

Here is a view from the top of the tower as the DOMs are lowered into the hole! With everyone hard at work, progress continues down at the Pole! 🏗️🔭✨ 📸: Colton Hill, IceCube/NSF #IceCubeNeutrinoObservatory #SouthPole #UpgradeUpdate #Science

Upgrade Update #11 Steady progress continues on the IceCube Upgrade construction effort, with four of the seven holes having been completed so far! 🏗️🔭✨ Read more➡️ icecube.wisc.edu/news/icecube... 📸: Yuya Makino, Erik Blaufuss, IceCube/NSF #IceCubeNeutrinoObservatory #UpgradeUpdate #Science

Join safety officer Sarah Bouckoms LIVE TODAY @ 1 PM CST , where she will describe her work on the IceCube Upgrade project this field season! 🧊📷✨ www.youtube.com/watch?v=azyD...

String 90 has been deployed! 🎉 Here, IceCubers are surrounding the final mDOM installed on the string, which was nicknamed "Give Me The Night." (Fun fact: all the mDOMs are named after disco or Taylor Swift songs! 🎶) Only 3 more strings to go!! 📸: Emmett Krupczak

📍The New Year marks a time for change! At the South Pole, it also means a new pole marker, crafted by the current winterovers and unveiled during the annual New Year’s ceremony. Read more about week 1 ➡️ icecube.wisc.edu/news/life-at... 📸:Alicia Fattorini, IceCube/NSF

📢FINAL CALL! ❄️ 🧊 Winterover applications for the 2026-27 season are STILL OPEN! Applications are due January 15, 2026. Find out more and apply here➡️ icecube.wisc.edu/jobs/ #JobApplication #Science #Antarctic #Astrophysics #IceCubeNeutrinoObservatory

Upgrade Update #10 Three down, four to go. That’s IceCube Upgrade strings, in case you’ve missed the progress so far! 🔭🌌✨ Read more➡️ icecube.wisc.edu/news/icecube... #IceCubeNeutrinoObservatory #SouthPole #Science

📍The first IceCube Upgrade string has been successfully deployed! Read more about week 51➡️ icecube.wisc.edu/news/life-at... 📸:Yuya Makino, IceCube/NSF

🎉🎉 Happy New Year from the IceCube Collaboration! 🎆 #2026

Upgrade Update #8 Drilling has begun! The drill team worked tirelessly to make sure everything came together, which was no small task. Read more about the process ➡️ icecube.wisc.edu/news/icecube... 📸: Delia Tosi, Albrecht Karle, IceCube/NSF #IceCubeNeutrinoObservatory #UpgradeUpdate #SouthPole

🎥 Here is a 7-hour time-lapse at the start of drilling the first hole for the IceCube Upgrade. This comes almost exactly 15 years after drilling for the 86th hole of IceCube was finished on December 18, 2010! 🤯 🎥 Jennifer Wang and Vedant Basu, IceCube/NSF

📍Last week was filled with activities like detector maintenance tasks and emergency response team drills. Read more about week 49➡️ icecube.wisc.edu/news/life-at... 📸:Michael Rayne, IceCube/NSF

Drilling for hole 87, the first hole of the IceCube Upgrade, has officially started! 🎉 Thank you to the team down at the South Pole for all of your hard work. Stay tuned for more updates! 📸: Jennifer Wang, IceCube/NSF #IceCubeNeutrinoObservatory #Astrophysics #IceCubeUpgrade

Upgrade Update #7 They’re getting close to drilling at the South Pole. The week’s primary focus was taking stock and working on final tasks in each work area! Read more ➡️ icecube.wisc.edu/news/icecube... #IceCubeNeutrinoObservatory #SouthPole #Science

📢 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 STILL OPEN! Applications are due January 15, 2026. Find out more and apply here ➡️ icecube.wisc.edu/jobs/

This month's Voices of IceCube feature is Nora Valtonen-Mattila, a post-doc at The Ruhr-Universität Bochum! 📣 Read the interview ➡️ icecube.wisc.edu/voices-of-ic... #VoicesofIceCube #IceCubeObservatory #SouthPole #Neutrinos #Astrophysics #Science #IceCubeStation 3w

📍Last week’s busy agenda consisted of updating computers, welcoming some new arrivals, and watching the South Pole Overland Traverse, or SPOT, arrive. Read more about week 48 ➡️ icecube.wisc.edu/news/life-at... 📸:Alicia Fattorini, IceCube/NSF

Come rediscover Rosie & Gibbs, who are now embarking on their 7th adventure! The first issue was published in March 2018, and the next adventure is available now! Check it out➡️ icecube.wisc.edu/outreach/act...

Upgrade Update #6 IceCubers welcomed the arrival of a new cargo load that included the seven main cables for the Upgrade deployment! 🏗️ Read more➡️ icecube.wisc.edu/news/icecube... 📸: John Kelley, Surujhdeo Seunarine, IceCube/NSF

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....

📍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

📍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

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

📍❄️🐧 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.

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

📍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

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

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

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...

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