"Novikov, Igor Dmitriyevich"@en . "1935-11-10Z"^^ . "1935Z"^^ . "Igor Dmitriyevich Novikov (Russian: \u0418\u0301\u0433\u043E\u0440\u044C \u0414\u043C\u0438\u0301\u0442\u0440\u0438\u0435\u0432\u0438\u0447 \u041D\u043E\u0301\u0432\u0438\u043A\u043E\u0432) (born November 10, 1935 in Moscow) is a Russian (and former Soviet) theoretical astrophysicist and cosmologist.Novikov formulated the Novikov self-consistency principle in the mid-1980s, a contribution to the theory of time travel. Novikov gained his Ph.D. degree in astrophysics in 1965 and the Russian D.Sc. degree in astrophysics in 1970."@en . "Russian astronomer" .