Friday, February 8, 2013

APOD 3.4

This image shows the Andromeda Galaxy, the closest spiral galaxy to our own, in Infrared from the Herschel Space Observatory. Andromeda is 200,000 light-years across, double the size of the Milky Way.  The red light in the outskirts of the galaxy shows dust heated and glowing from starlight. The blue core shows hotter dust. Andromeda contains a huge capacity for future star development, shown by the amount of molecular gas present. 

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