A Wider, Groovier Milky Way Galaxy
A galactic "groove" prompts astronomers to recalculate the width of the Milky Way.
By Maggie McKee
Nov 30, 2015 6:00 AMNov 12, 2019 4:58 AM
Two rings of stars once thought outside our galaxy might actually be part of it and would extend the disk 50 percent farther from its edge. | Dana Berry/Rensselaer Polytechnic Institute
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