IceCube collaborator Ali Kheirandish received a 2025 International Union of Pure and Applied Physics (IUPAP) Early Career Scientist Prize. Kheirandish accepted the award on July 15 during the opening ceremony of the 39th International Cosmic Ray Conference (ICRC) held in Geneva, Switzerland. He was recognized for “his theoretical insights in associating X-ray emitting active galaxies […]
Week 26 at the Pole
There’s a lot of snow around at the South Pole for a place that’s classified as a desert. That’s because it is carried in from strong winds that blow across the continent. And the blowing snow accumulates around the station and all the structures located at the Pole, including the IceCube Upgrade storage containers as […]
IceCube’s first hunt for neutrino sources using two types of signals
The origins of cosmic rays—and the astrophysical sources responsible for producing and accelerating them—remain an open question in science. However, high-energy neutrinos, nearly massless subatomic particles, may hold the key to resolving this long-standing mystery. At the South Pole, the IceCube Neutrino Observatory occupies a cubic kilometer of ice in search of high-energy neutrinos from […]
IceCube reaches 20-year milestone in quest to uncover the makeup of ultra-high-energy cosmic rays
Cosmic rays are charged particles that rain down on Earth from space, with energies that can reach as high as a fast-thrown baseball packed into a single subatomic particle. Although a lot is known about cosmic rays, their origin still remains a century-old mystery. The highest energy particles, called ultra-high-energy cosmic rays (UHECRs), are closely […]
PhD theses granted – Spring 2025
We would like to congratulate the following PhD graduates who successfully defended their theses in the spring of 2025: Federico Bontempo Bennett Brinson Diyaselis Delgado […]
Week 25 at the Pole
Last week, things were quiet for IceCube’s winteovers as well as for the South Pole station in general, in recovery mode after the midwinter celebrations. But the skies weren’t quiet—the stars were out and auroras danced overhead. On one occasion, a large green auroa almost filled the entire sky, enough to fill one’s head with […]
Twelfth edition of IceCube Masterclass brings together students and scientists
Over 200 students across 18 institutions in Belgium, Canada, Germany, India, and the United States participated in the twelfth annual edition of IceCube Masterclass. The masterclasses were held between the months of March and May, with the Institute of Physics (IOP) in India and the University of Nevada, Las Vegas, hosting masterclasses for the first […]
Week 24 at the Pole
Wash, rinse, and repeat. You have two seasons at the Pole, summer and winter. Summer is long gone and now it’s not only winter but midwinter, which means the station has been closed for a while now and they’ve reached their halfway mark. But as the second half of winter unfolds, there will still be […]
Improved IceTop measurements add to the cosmic-ray muon puzzle
When charged particles from outer space called cosmic rays collide with particles in the Earth’s atmosphere, they create a shower of secondary particles (air showers) that cascade down to Earth. These secondary particles include photons, electrons, and muons. Some of these secondary particles reach the IceCube Neutrino Observatory at the South Pole, a detector consisting […]
Week 23 at the Pole
Last week’s outdoor photographs from the Pole have gone from colorful to more black and white (with some red accents) thanks to a bright moon and no auroras in sight. It was a relatively quiet week. IceCube’s winterovers were busy doing test runs in preparation for the start of the next physics run season. The […]