This is Milky Way, our home galaxy. There are about 200-400 billions star in this galaxy. It's about 100000 light years. Our galaxy is a spiral galaxy, there are 3 kind of galaxy shape, Spiral, Irregular, Elliptical. Our Sun is in the side of the galaxy, and it's revolting a center which is a huge black hole.
Wednesday, April 22, 2009
Milky Way
Posted by Tony at 9:57 PM
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