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Astronomy Picture of the Day - Colors: Ring Nebula versus Stars
APOD.NASA.gov ^ | 21 Jul, 2021 | Image Credit: Robert Vanderbei (Princeton U.)

Posted on 07/21/2021 5:32:07 PM PDT by MtnClimber

Explanation: What if you could see, separately, all the colors of the Ring? And of the surrounding stars? There's technology for that. The featured image shows the Ring Nebula (M57) and nearby stars through such technology: in this case, a prism-like diffraction grating. The Ring Nebula is seen only a few times because it emits light, primarily, in only a few colors. The two brightest emitted colors are hydrogen (red) and oxygen (blue), appearing as nearly overlapping images to the left of the image center. The image just to the right of center is the color-combined icon normally seen. Stars, on the other hand, emit most of their light in colors all across the visible spectrum. These colors, combined, make a nearly continuous streak -- which is why stars appear accompanied by multicolored bars. Breaking object light up into colors is scientifically useful because it can reveal the elements that compose that object, how fast that object is moving, and how distant that object is.


TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: nasa
To be added or removed from the Astronomy Picture of the Day ping list please send me a request via "Private Reply" (Mail).

For more detail go to the link and click on the image for a high definition image. You can then move the magnifying glass cursor then click to zoom in and click again to zoom out. When zoomed in you can scan by moving the side bars on the bottom and right side of the image.

1 posted on 07/21/2021 5:32:07 PM PDT by MtnClimber
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To: MtnClimber

2 posted on 07/21/2021 5:32:26 PM PDT by MtnClimber (For photos of Colorado scenery and wildlife, click on my screen name for my FR home page.)
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To: 21stCenturion; 21twelve; 4everontheRight; abb; AFB-XYZ; America_Right; AZ .44 MAG; BBB333; ...
Pinging the APOD list.

🪐 🌟 🌌 🍔


3 posted on 07/21/2021 5:33:05 PM PDT by MtnClimber (For photos of Colorado scenery and wildlife, click on my screen name for my FR home page.)
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To: MtnClimber

It that’s a Hunter Biden painting, I’ll give you $5 million!


4 posted on 07/21/2021 5:43:49 PM PDT by PTBAA
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To: PTBAA
It that’s a Hunter Biden painting, I’ll give you $5 million!

I'm not selling it!

5 posted on 07/21/2021 5:48:32 PM PDT by MtnClimber (For photos of Colorado scenery and wildlife, click on my screen name for my FR home page.)
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To: MtnClimber
It that’s a Hunter Biden painting, I’ll give you $5 million!

I'm not selling it!

A Hunter Biden painting has no value after the first sale... unless all future buyers kick in "10% for the Big Guy" too.

6 posted on 07/21/2021 6:11:44 PM PDT by KarlInOhio (Police should refuse duty at NBA venues. Let them wallow in their desired chaos without police.)
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To: MtnClimber; Paul Atreides
...brightest emitted colors are hydrogen (red) and oxygen (blue)

So, it's a Water Ring?......Does Paul Atreides know about this?...............

7 posted on 07/22/2021 5:11:40 AM PDT by Red Badger (Homeless veterans camp in the streets while illegal aliens are put up in hotels.....................)
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