Physicist Steven Weinberg, who won the Nobel prize in 1979 with two other scientists for their separate contributions unlocking mysteries of tiny particles and their electromagnetic interaction, has died at 88, the University of Texas at Austin said Saturday.

A professor at the university since the 1980s, Weinberg died Friday in an Austin, Texas, hospital, according to his wife Louise, said UT spokesperson Christine Sinatra. The physicist had been hospitalized for several weeks, but a cause of death was not released, according to Sinatra.

“The passing of Steven Weinberg is a loss for The University of Texas and for society,” UT President Jay Hartzell said in a statement.

“Professor Weinberg unlocked the mysteries of the universe for millions of people, enriching humanity’s concept of nature and our relationship to the world,” Hartzell added.

In 1979, Weinberg shared the Nobel prize in physics with scientists Abdus Salam and Sheldon Lee Glashow.

The three, working separately, were honored “for their contributions to the theory of the unified weak and electromagnetic interaction between elementary particles, including … the prediction of the weak neutral current,” according to the Nobel Prize website.

Their work improved the understanding of how everything in the universe relates, according to a UT statement. Weinberg was a professor at the university since 1982, teaching both physics and astronomy.

A New York native, Weinberg was a researcher at Columbia University and the University of California, Berkeley, earlier in his career. He then served on the faculty of Harvard University and the Massachusetts Institute of Technology before joining the UT faculty, according to the university.

Weinberg is survived by his wife and a daughter. Funeral services were not announced.