An image of the neutrinos from the sun created by combining data from the Super-Kamiokande neutrino detector. (Credit: R. Svoboda and K. Gordan (LSU))
This image appears in the #59: Where did all the Neutrinos go? Technology Through Time article.
The August 4, 1972 solar flare was so powerful that, by some estimates, a spacesuited astronaut would have received a lethal does of radiation.