Monday, November 23, 2009

Milky Way Galaxy: "You are Here"

Like yesterday's post ("Humanity Is Not the Eldest" (November 22, 2009)), This one isn't much more than a link and a few comments.

First, the link: "A Map of the Milky Way>," Atlas of the Universe.

The eye-popping feature on that page is a pretty good map/diagram of our Milky Way galaxy, showing our position, and the location of six of the arms. There's also a map of known areas of neutral and ionized hydrogen, and quite a bit of information about our home region.
Update (November 26, 2009)

Another link: "The Structure of the Milky Way"
Gene Smith's Astronomy Tutorial
Center for Astrophysics & Space Sciences, University of California, San Diego

Of interest: the Cassiopeia OB2 complex; NGC 7538 (possibly 9,100 light years away); emission nebula (H II region) Bubble Nebula/NGC 7635/Sharpless 162, (possibly 11,000 light years away).
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