On Monday, Wolfgang "Pief" Panofsky (88), a father of SLAC, suffered from a heart attack. LA Times.
54 years ago, Edwin Hubble died. He was a great athlete when he was young. Wikipedia argues that he was not really the first one who discovered any of the things - such as the red shift of galaxies or the proportionality law to velocity. Nevertheless, his work has led to a broad acceptance of the expanding Universe.