Milky Way Spiral Arms

[blobrana]

"For decades, astronomers have been blind to what our galaxy, the Milky Way, really looks like. After all, we sit in the midst of it and can't step outside for a bird's eye view.
Now, new images from NASA's Spitzer Space Telescope are shedding light on the true structure of the Milky Way, revealing that it has just two major arms of stars instead of the four it was previously thought to possess."

Read more (http://www.spitzer.caltech.edu/Media/releases/ssc2008-10/release.shtml)

[Zardozi]

There are plenty of Stellar arms remaining in our system. I consider them minor

[blobrana]

"More than 800,000 snapshots from NASA's Spitzer Space Telescope have been stitched together to create a new "coming of age" portrait of stars in our inner Milky Way galaxy.
The image depicts an area of sky 120 degrees wide by two degrees tall. It was unveiled today at the 212th meeting of the American Astronomical Society in St. Louis, Mo."

Read more (http://www.spitzer.caltech.edu/Media/releases/ssc2008-11/release.shtml)

GLIMPSEII Version 2.0 Data Release (April 2008)
See more (http://www.astro.wisc.edu/sirtf/glimpsedata.html)