We are used to seeing the Milky Way in the optical. The band of light is due to stars, with large blotches of dark, due to dust in the interstellar medium. |
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A near-infrared image shows the distribution of cool stars and hot dust. This image highlights the Bulge of our Galaxy because..? |
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At far-infrared wavelengths, all we see is cold dust which is VERY closely concentrated to the plane of the galaxy. It makes up a very flat distribution in the picture. |
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The radio reveals emission from Supernova Remnants!! And very local ones, took, which appear to fill our entire sky. The "Northern Spur" is seen in both Radio AND X-ray. |
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Structures seen in the radio are similar to those seen in the X-ray they come from Supernova remnants, which have both radio and X-ray emission. |
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