Neutrinos are among the most abundant particles in the Universe and one of the most elusive. We are continuously traversed by millions of neutrinos which are copiously produced by our star, the Sun. Every centimeter of our body is crossed by 100 billions of neutrinos, per second! Despite being so abundant neutrinos are still mysterious particles, which probably carries the secret of why, in our Universe, we have matter and not an equal amount of anti-matter... Brazilian researchers are participating to one of the most intriguing and challenging neutrino experiment of the world, the Deep Underground Neutrino Experiment (DUNE) and a Brazilian technology has been developed to capture neutrinos, the ARAPUCA.