Tunguska cosmic body (TCB) was a comet, containing organic matter, says Russian scientist, the fellow of Troitsk Institute of Innovative and Thermonuclear Research.
      
      The scientist reports that the TCB was a comet, containing organic matter, which was heated after entering Earth’s atmosphere, and organic matter started decomposing intensively and emitting carbon dioxide.
      
      The scientist also showed the results of chemical analysis of particles found in wood and soil – their composition reminded that of the Halley’s comet, studied by means of “Vega” spaceship.
      
      The scientists are still unable to perform total identification of the TCB chemical composition, but they are sure that some high-temperature process (an explosion) had definitely taken place.
      
      Source: ITAR-TASS