Although it’s a beautiful photograph, it’s really a composite, made up of images taken by the Chandra X-Ray Observatory and other optical telescopes. The blue and green objects are seen in X-rays, while the red objects are seen in visible light. If you could actually see this with your own eyes, it wouldn’t look anything like this.
A region like this is very interesting to astronomers because it helps them understand how star-forming happens in the spiral arms of the Milky Way, and other spiral galaxies.
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