Structure of the Milkyway Spiral Redifined

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Astronomers have created the most detailed map of the Milky Way, revealing that its spiral arms extend significantly further than previously thought. The research, conducted by scientists at the University of California at Berkeley, analyzed atomic hydrogen distribution at radio wavelengths, uncovering new features of the galaxy. The findings indicate that the spiral structure is asymmetrical, with varying numbers of arms in different regions. Additionally, the arms extend beyond the expected distance for star presence, challenging existing theoretical models. This research contributes to the understanding of the Milky Way's classification, confirming it as a barred spiral galaxy.
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Astronomers have made the most detailed map ever of our galaxy's overall shape, showing that its spiral arms extend much further than expected. Evan Levine, Leo Blitz and Carl Heiles of the University of California at Berkeley analysed the distribution of atomic hydrogen in the Milky Way at radio wavelengths to reveal hitherto unseen features of our galactic backyard. The map shows that our galaxy's spiral structure is not symmetrical around its centre but contains more arms in some areas than others. Contrary to theoretical predictions, the arms also continue well beyond the distance at which stars should be found

http://physicsweb.org/articles/news/10/6/3/1
 
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Isn't our galaxy more of a barred spiral galaxly then a spiral galaxly. I thought they found that out recentlly.
 

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