Hi guys, I have a question about the difference in the time it takes a neutrino to escape the core of the sun compared to the time it takes a photon to escape from the core of the sun. Basically, my question is: what is the difference between photons and neutrinos that makes neutrinos very unlikely to interact with atoms, while photons are very likely to interact with atoms? I know that neutrinos are very small compared to the sizes of atoms and electrons, but aren't photons very small too? They don't really have a size, right? I've thought about it a bit, and maybe I've answered it myself: since electrons "orbit" the nucleus of an atom in the electron cloud, they are effectively "everywhere" in their orbit at once, right? And then since the atoms are so tightly packed together in the core, the electron clouds are very close together too, right? So then basically it comes down to the fact that the neutrino hardly ever interacts with electrons and other particles, while photons end up getting sucked into an atom all the time. I'm not 100% certain on that though, could someone help clear this up?