Editing Perseus Arm (section)

{{Short description|One of two major spiral arms of the Milky Way galaxy}}
[[Image:Milky Way Arms ssc2008-10.svg|250px|right|thumb|Observed structure of the Milky Way's spiral arms.]]

The '''Perseus Arm''' is one of two major [[spiral arm]]s of the [[Milky Way]] galaxy. The second major arm is called the [[Scutum–Centaurus Arm]]. The Perseus Arm begins from the [[distal]] end of the long [[Milky Way]] central bar.<ref name=Churchwell2009>{{cite journal|last=Churchwell|first=Ed|author2=Babler, Brian L. |author3=Meade, Marlin A. |title=The Spitzer/GLIMPSE Surveys: A New View of the Milky Way|journal=Publications of the Astronomical Society of the Pacific|date=2009|volume=121|issue=877 |pages=213–230|doi=10.1086/597811|url=http://www.astro.wisc.edu/sirtf/Churchwell_2009.pdf|bibcode=2009PASP..121..213C}}</ref> Previously thought to be 13,000 light-years away, it is now thought to lie 6,400 light years from the [[Solar System]].<ref>{{cite web|url=https://www.newscientist.com/article/dn8436#.UnJSsvmnq1U|title=Spiral arm of Milky Way looms closer than thought|last=McKee|first=Maggie|date=8 December 2005 |work=New Scientist|publisher=Reed Business Information Ltd|access-date=31 October 2013}}</ref>