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Positions of orange giants across our galaxy shows deformation of Milky Way disc of stars

missions icon Gaia 19. 12. 2013 Ongoing


  • Stars of our galaxy orbit its center in a disc that has more than 50 thousand light years radius.
  • Originally it was thought that the disc is symmetrical.
  • New research shows, that there are regions above and bellow the disc.
  • Scientists don't know what is the cause of this asymmetry.
  • Leading explanations are collision with another galaxy in distant past, gravitational influence of satellite galaxies, or influence of internal structures, for example arms of the Milky Way
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