Page 6, The Milky Way and Other Galaxies

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Multi-Wavelength Images of our Galaxy

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.

A near-infrared image shows the distribution of cool stars and hot dust. This image highlights the Bulge of our Galaxy because..?

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.

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.

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.

Which of these surveys were taken from Satellites and which were taken from the ground???

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.
A near-infrared image shows the distribution of cool stars and hot dust. This image highlights the Bulge of our Galaxy because..?
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.
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.
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.