George Efstathiou

George Petros Efstathiou (; born 2 September 1955) is a British astrophysicist who was Professor of Astrophysics at the University of Cambridge from 1997 to 2022, where he was also the first director of the Kavli Institute for Cosmology from 2008 to 2016. Prior to these appointments he was Savilian Professor of Astronomy at the University of Oxford.

Efstathiou was made a Fellow of the Royal Society in 1994 and has received numerous awards, including (with collaborators Simon White, Marc Davis and Carlos Frenk) the 2011 Gruber Prize in Cosmology and the 2022 Gold Medal of the Royal Astronomical Society. He is one of the most heavily cited astrophysicists; as of 2025, his 400 published papers had been cited over 130,000 times. Provided by Wikipedia