BEGINNING OF THE CENTURY: 
    "WE KNOW EVERYTHING about 
    NATURE" (except two small 
    clouds...) 
END OF THE CENTURY: 
      NO PHYSICAL THEORY
      AT ALL...

      What does the Universe consist of?
      (DM problem)

      Black Holes- main sources of Energy in the Universe but there are nÍ direct proofs of their existence... 
      New Physics is impossible without high energy experiments 
      Astronomers can not reconstruct the history of the Universe without Physical Theory 
    «USE UNIVERSE AS ACCELERATOR FOR POOR MAN»
      (Y.Zeldovich)
             
    Andrey SAKHAROV cosmo-physical  program