Did you know you can take photos of the Sun across the Earth?
This image of the Sun was taken through the Earth, in “neutrino light”, at the Super-Kamiokande detector (Japan). The image has been obtained with a 503 days exposure, by registering neutrinos emitted from the solar core and detected in a 50 000-ton water pool located 1 km underground. At night, neutrinos were transparently traversing the whole earth before being registered in this image.
What are neutrinos?
A neutrino is an elementary matter particle of almost zero mass. We are awash in neutrinos. They come straight through the earth at nearly the speed of light, all the time, day and night, in enormous numbers. About 100 trillion neutrinos pass through our bodies every second.
Isn’t it one of the most amazing science pictures?