Belgian Francis Halzen wins physics Nobel for work on ‘ghostly messengers’ from outer space

Belgian physicist Francis Halzen has been awarded the Nobel Prize in Physics for his pioneering work with the IceCube Neutrino Observatory, located in Antarctica. The Royal Swedish Academy of Sciences praised Halzen for his "decisive contributions to the IceCube Neutrino Observatory and the discovery of high-energy neutrinos of astrophysical origin."

Neutrinos, known as "ghostly messengers from space," are rare subatomic particles that can provide unique insights into distant cosmic events. Halzen, 82, was born in Tienen, Belgium, and currently holds a professorship at the University of Wisconsin-Madison in the United States. He expressed his surprise and delight upon learning of the Nobel recognition.

The observatory, developed over a decade, utilizes a cubic kilometer of ice equipped with light sensors to capture neutrinos from extreme energy processes in the universe. These neutrinos, unlike other particles, travel through space without changing direction or losing energy, making them invaluable tools for astronomers. Belgium's Prime Minister extended congratulations, acknowledging Halzen as the second Belgian to win a Nobel Prize in Physics.

While neutrinos could potentially carry messages from extraterrestrial civilizations, Halzen pointed out that dealing with more immediate scientific challenges is currently a more pressing concern.