The article mentions that the sun produces 10^25 neutrinos every second. This felt quite off. I found an Ohio State PDF that mentioned 2 * 10^38 neutrinos per

The article mentions that the sun produces 10^25 neutrinos every second. This felt quite off. I found an Ohio State PDF that mentioned 2 * 10^38 neutrinos per second. Elsewhere I saw mentioned 7 * 10^10 particles going through your thumb every second (1 cm^2). Times that by cm^2 surface area of sphere that is radius of distance between sun and earth (3 * 10^27), and the 10^38 looks like the correct one. Interestingly, I also saw mentioned a nuclear reactor makes 10^20 neutrinos per second. EDIT: Not sure why the downvote. Because I didn't link sources? Here's the powerpoint presentation: http://www.physics.ohio-state.edu/~hughes/freshman_seminar/press/minos_new#:~:text=From%20the%20process%20of%20thermonuclear,2x1038%20per%20second%20total.&text=A%20standard%20nuclear%20power%20plant,energy%20is%20around%204%20MeV http://www.physics.ohio-state.edu/~hughes/freshman_seminar/p... Here is Fermi lab saying number per second in thumbnail: https://neutrinos.fnal.gov/sources/solar-neutrinos/ https://neutrinos.fnal.gov/sources/solar-neutrinos/ Here's someone's homework that gives the calculation total neutrinos per second based on number of He fusion reactions, which also matches 10^38. http://www.as.utexas.edu/astronomy/education/fall08/lacy/secure/hw5.pdf http://www.as.utexas.edu/astronomy/education/fall08/lacy/sec... Sorry... not many great sources here but everything points to the 10^38 number. The 10^25 stated in the article may be mistakenly using the very similar number for joules of energy created each second by the sun (10^25).