Igor and Grichka Bogdanoff

Igor and Grichka Bogdanoff
Igor (left) and Grichka (right) in 2016
Born	Igor Youriévitch Bogdanoff Grégoire Youriévitch Bogdanoff (1949-08-29)29 August 1949 Saint-Lary, Gers, France
Died	Igor: 3 January 2022(2022-01-03) (aged 72) Grichka: 28 December 2021(2021-12-28) (aged 72) Paris, France
Other names	Bogdanoff twins
Occupation	Media personalities
Years active	1976-2022
Known for	Popular science Bogdanov affair
Alma mater	University of Burgundy
Scientific career
Fields	Theoretical physics
Thesis	Fluctuations quantiques de la signature de la métrique à l'échelle de Planck  (1999)
Doctoral advisor	Moshé Flato [fr], Daniel Sternheimer

Igor Youriévitch Bogdanoff (French pronunciation: [iɡɔʁ juʁi.evitʃ bɔɡdanɔf]; 29 August 1949 – 3 January 2022) and Grégoire "Grichka" Youriévitch Bogdanoff (French: [ɡʁeɡwaʁ ɡʁiʃka]; 29 August 1949 – 28 December 2021), alternatively spelled Bogdanov, were French twin television presenters,^[1] producers, and essayists who presented a variety of programmes in science fiction, popular science, and cosmology. They were involved in a number of controversies. The most notable is the Bogdanov affair. It brought to light how they received Ph.D. degrees^[2] based on largely nonsensical physics papers that were nonetheless peer-reviewed and published in reputable scientific journals.^[2] In their later years, they were also the subject of numerous internet memes, particularly in the cryptocurrency community.