Burzycki.org

Neutrinos are elementary particles denoted by the Greek letter ν. Travelling at or close to the speed of light, lacking electric charge and able to pass through ordinary matter almost undisturbed, they are extremely difficult to detect. Neutrinos may have a minuscule (but non-zero) mass, too small to be measured at this time.

Neutrinos are created as a result of certain types of radioactive decay or nuclear reactions such as those in the sun, in nuclear reactors, or when cosmic rays hit atoms. There are three types, or “flavors”, of neutrinos: electron neutrinos, muon neutrinos and tau neutrinos; each type also has an antimatter partner, an antineutrino. Electron neutrinos or antineutrinos are generated whenever neutrons change into protonsor vice versa, the two forms of beta decay.

Most neutrinos which pass through the Earth emanate from the sun, and more than 50 trillion solar electron neutrinos pass through the human body every second. http://en.wikipedia.org/wiki/Neutrino

 Interesting Fact:

It will take approximately 22 light years of lead to guarantee a Neutrino collision…. yes that is alot of lead…. this is called the Mean Free Path of a Neutrino