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Neutrinos are some of the most mysterious particles in nature, capable of passing through the Earth like it wasn't there. Neutrinos are, however, the most common particle in the universe. 

Believe it or not, approximately 100 trillion neutrinos pass completely harmlessly through your body every second! Their tendency not to interact very often with other particles makes detecting neutrinos very difficult, but it does not mean that they never interact — the probability that any given neutrino will interact with another particle is just very small.
https://www.space.com/what-are-neutrinos

NASA Supercomputers Help Unravel Complex Movements of the Sun’s Inner Layers

NASA’s advanced simulations reveal the Sun’s plasma flows, improving space weather predictions and safety for space missions.