Jack Steinberger, Nobel Winner in Physics, Dies at 99 Dr. Steinberger shared the prize in 1988 for expanding understanding of the neutrino, a staggeringly ubiquitous subatomic particle. The physicist Jack Steinberger in 1963. He and two colleagues won a Nobel Prize in 1988 for work that the Nobel committee said “opened entirely new opportunities for research into the innermost structure and dynamics of matter.”Credit...Robert W. Kelley/The LIFE Picture Collection, via Getty Images Published Dec. 16, 2020Updated Jan. 20, 2021 Jack Steinberger, who shared the 1988 Nobel Prize in Physics for...