The cosmic neutrino background (CνB) is a remnant from the early universe, formed just seconds after the Big Bang when neutrinos decoupled from matter. These elusive particles, crucial for understanding the universe's evolution, permeate space, providing insights into cosmic origins, structure formation, and fundamental physics phenomena.
![Press release] The Cosmic Neutrino Background: World](https://www2.ccs.tsukuba.ac.jp/Astro/assets/img/news/2020-12-01-press-release.jpg)
