Sir Martin John Rees, Baron Rees of Ludlow, OM, FRS, HonFREng, FMedSci, FRAS, HonFInst

Martin John Rees, Baron Rees of Ludlow, OM, PRS, HonFREng, FMedSci, FRAS, HonFInstP (born 23 June 1942) is a British cosmologist and astrophysicist. He is the fifteenth Astronomer Royal, appointed in 1995, and was Master of Trinity College, Cambridge, from 2004 to 2012 and President of the Royal Society between 2005 and 2010.

Honours and awards:
President of the Royal Astronomical Society (1992–94).
President of the British Science Association (1995–96).
Member of Council of the Royal Institution of Great Britain until 2010.
President of the Royal Society (2005-2010)
Rees has received honorary degrees from a number of universities including: Hull, Sussex, Uppsala, Toronto, Durham, Oxford, Cambridge, Harvard, Yale, Melbourne and Sydney.
Member, the US National Academy of Sciences,
Member, the Russian Academy of Sciences,
Member, the Pontifical Academy of Sciences,
Member, the Royal Netherlands Academy of Arts and Sciences,
Member, the Science Academy of Turkey,
Member, the Japan Academy.

Other awards and honours include:

1975 – Elected to the American Academy of Arts and Sciences
1982 – Elected to the National Academy of Sciences
1984 – Heineman Prize
1987 – Gold Medal of the Royal Astronomical Society
1989 – Balzan Prize for High Energy Astrophysics
1992 – Knight Bachelor
1993 – Bruce Medal
1993 – Elected to the American Philosophical Society
1995 – Honorary doctorate from the Faculty of Science and Technology at Uppsala University, Sweden
1999 – Golden Plate Award of the American Academy of Achievement
2000 – Bruno Rossi Prize
2001 – Gruber Prize in Cosmology
2003 – Albert Einstein World Award of Science
2004 – Henry Norris Russell Lectureship of the American Astronomical Society
2004 – Lifeboat Foundation's Guardian Award
2004 – Royal Society's Michael Faraday Prize for science communication
2005 – Life Peerage
2005 – Crafoord Prize, with James Gunn and James Peebles
2007 – Order of Merit – the personal gift of The Queen
2007 – Caird Medal of the National Maritime Museum
2007 – Honorary Fellow of the Royal Academy of Engineering
2011 – Templeton Prize
2012 – Institute of Physics Isaac Newton Medal
2013 – Dirac Medal ICTP
2016 – Honorary Doctorate, Harvard University (awarded in Cambridge, Massachusetts, US on 26 May 2016)
2017 – Lilienfeld Prize
2020 – Fritz Zwicky Prize for Astrophysics and Cosmology
2020 – Elected a Legacy Fellow of the American Astronomical Society.
2023 – Copley Medal

The Asteroid 4587 Rees and the Sir Martin Rees Academic Scholarship at Shrewsbury International School are named in his honour.

In June 2022, to celebrate his 80th birthday, Rees was the subject of the BBC programme The Sky at Night, in conversation with Professor Chris Lintott.