Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Neutrinos are one of the fundamental particles of matter, and the most abundant type of particle in the Universe. According to scientists, they are in constant motion, being nearly massless and traveling at light speed. Recently, for the first time, researchers proved the communication possibilities of neutrinos, using them to send a message through the ground, spelling out the word "neutrino" in a particle binary code. Moreover, it is believed that neutrino technology could revolutionize communication with submarines. To find out more about neutrino, its potential, properties and reactions – read this book.