Widescreen the video to see the most complete map yet of our home galaxy.
Then pit your wits against the galaxy quiz. (I got 11/11) Milky Way's Structure Mapped in Unprecedented Detail http://www.livescience.com/45144-milky-way-structure-spiral-arms.html http://www.livescience.com/45144-milky-way-structure-spiral-arms.html Milky Way's Structure Mapped in Unprecedented Detail http://www.livescience.com/45144-milky-way-structure-spiral-arms.html The Milky Way is a spiral galaxy — but what exactly does it look like? Does it have two, four, or more arms? Astronomers think that now they’re o... View on livescience.com http://www.livescience.com/45144-milky-way-structure-spiral-arms.html Preview by Yahoo
