Harald Keres (, in Pärnu – 26 June 2010) was an Estonian physicist considered to be the father of the Estonian school of relativistic gravitation theory. In 1961 Keres became a member of the Estonian Academy of Sciences in the field of theoretical physics. In 1996 Keres was awarded the Order of the National Coat of Arms, Class III. Keres was the elder brother of chess grandmaster Paul Keres. References External links Harald Keres at the Estonian Academy of Sciences Tartu Observatory about Harald Keres 1912 births 2010 deaths People from Pärnu People from the Governorate of Livonia 20th-century Estonian physicists University of Tartu alumni Academic staff of the University of Tartu Members of the Estonian Academy of Sciences Recipients of the Order of the National Coat of Arms, 3rd Class Burials at Raadi cemetery Soviet physicists