Most detailed ever 3D map of Milky Way confirms it is not flat but a warped and twisted galaxy

Until now, the understanding of the galaxy’s shape had been based upon indirect measurements of celestial landmarks within it and inferences from structures observed in other galaxies.


The Milky Way is not flat, as previously thought, but warped and twisted in shape, according to the most detailed map ever constructed.   Astronomers at the University of Warsaw used a telescope in the Chilean Andes to measure the distances between the sun and 2,400 stars to build a three-dimensional picture of the galaxy we live in.  In doing so, they showed it is in fact a disk, with four major spiral arms and a pole-like core running through the middle.



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