It took hundreds of observing hours for the Herschel Space Observatory to compile this infrared Galactic Plane Survey, revealing the star-forming regions through about 40% of our galaxy. The Milky Way galaxy is about 100,000 light years in diameter.
It took hundreds of observing hours for the Herschel Space Observatory to compile this infrared Galactic Plane Survey, revealing the star-forming regions through about 40% of our galaxy. The Milky Way galaxy is about 100,000 light years in diameter.
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