Using infrared images from NASA's 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
<ul><li><a href="//commons.wikimedia.org/wiki/File:236084main_MilkyWay-full-annotated.jpg" title="File:236084main MilkyWay-full-annotated.jpg">236084main_MilkyWay-full-annotated.jpg</a>: NASA/JPL-Caltech/R. Hurt</li>
<li>derivative work: <a href="//commons.wikimedia.org/wiki/User:Ricardo_Ferreira_de_Oliveira" title="User:Ricardo Ferreira de Oliveira">Ricardo Ferreira de Oliveira</a> (<a href="//commons.wikimedia.org/wiki/User_talk:Ricardo_Ferreira_de_Oliveira" title="User talk:Ricardo Ferreira de Oliveira"><span class="signature-talk">talk</span></a>)</li></ul>
2009-06-09 22:28
<ul><li><a href="//commons.wikimedia.org/wiki/File:236084main_MilkyWay-full-annotated.jpg" title="File:236084main MilkyWay-full-annotated.jpg">236084main_MilkyWay-full-annotated.jpg</a></li></ul>