Antony Hewish

Antony Hewish’s career was defined by patient observation and a willingness to build instruments that asked new questions of the cosmos. At the Cavendish Laboratory in Cambridge, he dedicated himself to studying the scintillation, or twinkling, of radio stars to probe the solar wind. This pursuit required a new kind of telescope, and Hewish spearheaded the design and construction of a massive, four-acre array of over two thousand radio dipoles. It was this instrument, operational in 1967, that provided the data from which his doctoral student, Jocelyn Bell Burnell, first noticed the strange, regular pulses. Hewish’s initial skepticism gave way to the monumental realization that they had discovered pulsars—rapidly spinning neutron stars, the dense remnants of supernovae. The 1974 Nobel Prize in Physics for the discovery was awarded to Hewish and his supervisor, Martin Ryle, a decision that remains debated due to Bell Burnell’s exclusion. Beyond the prize, Hewish’s work fundamentally altered astrophysics, providing key evidence for gravitational radiation and the existence of extreme states of matter.