Japan Nobel laureate Koshiba who found neutrinos dies at 94

TOKYO (AP) — Japanese astrophysicist Masatoshi Koshiba, a co-winner of the 2002 Nobel Prize in physics for confirming the existence of elementary particles called neutrinos, has died. He was 94.

Koshiba, a distinguished professor at the University of Tokyo, died at a Tokyo hospital on Thursday, the university announced Friday. It didn’t provide a cause of death.

Koshiba devised the construction of giant underground chambers to detect neutrinos, elusive particles that stream from the sun.

Neutrinos offer a unique view of the sun’s inner workings because they are produced in its heart by the same process that causes the sun to shine.

He shared the prize with two other scientists — the late Raymond Davis Jr. of the University of Pennsylvania, who also worked on neutrino detectors, and the late Italian-born scientist Riccardo Giacconi, who was cited for X-ray telescopes that provide sharper images of the universe.

Koshiba worked at

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