Story perspectives

New Telescope Reveals Diagonal Magnetic Reversal in Sagittarius Arm

5/22/2026

Summary

Story summary

University of Calgary researchers discovered a diagonal magnetic-field reversal in the Milky Way’s Sagittarius Arm.
Dr. Anna Ordog said a new telescope at the Dominion Radio Astrophysical Observatory enabled a wide-frequency northern-sky survey.
Booth explained that measuring Faraday rotation let the team trace hidden magnetic structures across the galaxy.
Booth and colleagues released a three-dimensional model that shows the reversal as a diagonal feature from Earth, aiding galactic-evolution models.

1 of 1

Story summary

University of Calgary researchers discovered a diagonal magnetic-field reversal in the Milky Way’s Sagittarius Arm.
Dr. Anna Ordog said a new telescope at the Dominion Radio Astrophysical Observatory enabled a wide-frequency northern-sky survey.
Booth explained that measuring Faraday rotation let the team trace hidden magnetic structures across the galaxy.
Booth and colleagues released a three-dimensional model that shows the reversal as a diagonal feature from Earth, aiding galactic-evolution models.