Light emitted from the core of the sun is re-absorbed by the stellar plasma/matter many, many times before the energy finally, as the result of a random walk, i

Light emitted from the core of the sun is re-absorbed by the stellar plasma/matter many, many times before the energy finally, as the result of a random walk, is expressed close enough to the surface that its mean free path is on the order of the distance to Earth. However, since neutrinos are not affected by the charged matter, they are free to leave far more easily and thus, rather than a random walk lasting thousands of years, they simply "flit" right through the intervening material until they hit our detectors (extremely rarely).