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Asked by Cormac to Andres on 15 Nov 2016.
Hi! Neutrinos are very very veeery small particles, which are neutral (meaning that they do not interact with light) and fundamental (meaning that they can’t be split any further). They interact so weakly with us that billions of them pass through us every seconds and we do not feel anything!
So if they are small and we do not feel them, how are they important at all? Well, they are very interesting particles because they were believed no to have mass. However, scientists discovered that they do have a very small mass recently, but people do not understand why! So this is a big mystery!
In addition, they might hold the key of why there is more matter than antimatter in the universe which, essentially, explains why we exist!!! So even if they seem pointless, they might actually be quite important to the development of our universe and life!
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