The Hunt for the First Neutrinos in the Universe - Cosmic Neutrino Background

The video explores the Cosmic Microwave Background (CMB) and the elusive Cosmic Neutrino Background. It explains the concept of decoupling, where particles like photons and neutrinos stopped interacting with matter, allowing them to travel freely through space. The CMB formed when photons decoupled, while neutrinos decoupled much earlier. Detecting cosmic neutrinos is challenging due to their low energy and weak interaction with matter. Current efforts focus on indirect detection methods, such as studying the CMB for neutrino imprints and monitoring tritium decay. These efforts aim to push back our observational limits of the universe's history.

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