Martin Rees is a British astronomer and astrophysicist. He has been Astronomer Royal since 1995, and Master of Trinity College, Cambridge since 2004. He became President of the Royal Society on December 1, 2005.
Rees was educated at Shrewsbury School and Trinity College, Cambridge, and held post-doctoral research positions in the United Kingdom and the United States before taking a professorship at Sussex University. Returning to Cambridge, he held the post of Plumian Professor until 1991 and was director of the Institute of Astronomy there. From 1992 to 2003 he was Royal Society Research Professor, and from 2003 Professor of Cosmology and Astrophysics. He was Professor of Astronomy at Gresham College, London, in 1975 and became a Fellow of the Royal Society in 1979. He also holds Visiting Professorships at Imperial College London and at the University of Leicester.
Source - Wikipedia http://en.wikipedia.org/wiki/Martin_Rees