n MNASSA : Monthly Notes of the Astronomical Society of South Africa - Only two spiral arms to our Milky Way? : news notes

Volume 67, Issue 7_8
  • ISSN : 0024-8266



Using infrared images from the Spitzer Space Telescope, scientists have discovered that the Milky Way's elegant spiral structure is dominated by just two arms wrapping off the ends of a central bar of stars. Previously, our galaxy was thought to possess four major arms.

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