'Ghost particles' from space telescope wins physics Nobel

Belgian physicist Prof Francis Halzen has been awarded the Nobel Prize in Physics for his groundbreaking work on an observatory that detects high-energy particles from space, revolutionizing our understanding of the distant universe. Halzen spearheaded the creation of IceCube, a neutrino observatory located at the South Pole, utilizing a cubic kilometer of Antarctic ice and advanced light sensors to observe neutrinos.

These particles, known for their ability to convey information about violent, high-energy cosmic processes, were identified as the focus of Halzen's research vision, first articulated in 1988.

The Royal Swedish Academy of Sciences lauded Halzen's visionary leadership and scientific prowess as the cornerstone of the IceCube Neutrino Observatory. Mark Pearce, Chair of the Nobel Committee for Physics, highlighted Halzen's persistent dedication and scientific foresight, which have ushered in a new era of cosmic observation.

Neutrinos, though invisible and incredibly elusive, are abundant in the universe, with the Sun alone emitting billions annually, albeit mostly harmless to Earth. However, IceCube specializes in the detection of neutrinos of much greater energy, believed to be generated by cataclysmic events in distant galaxies.

These high-energy neutrinos traverse vast cosmic distances and only rarely interact with matter, such as the Antarctic ice, producing a faint flash of light. This rare interaction serves as a unique cosmic signal, enabling scientists to trace back the origin of the neutrinos and the extreme conditions that spawned them. Through IceCube, scientists can thus probe realms inaccessible to traditional telescopes, offering unprecedented insights into the cosmos.