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3 U.S.-born scientists win Nobel physics prize

Three U.S.-born scientists won the Nobel Prize in physics on Tuesday for a study of exploding stars that discovered that the expansion of the universe is accelerating.

The Royal Swedish Academy of Sciences said American Saul Perlmutter would share the 10 million kronor ($1.5 million) award with U.S.-Australian Brian Schmidt and U.S. scientist Adam Riess “for the discovery of the accelerating expansion of the universe through observations of distant supernovae.”