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== external links == == external links ==


Please add to this article external links about Cat's Eye Nebula - scientific explanations from this site: http://earthspacecircle.blogspot.co.uk/2012/12/the-cats-eye-nebula-dying-star-creates.html Please add to this article external links about Cat's Eye Nebula - scientific explanations from this site: http://earthspacecircle.blogspot.com/2012/12/the-cats-eye-nebula-dying-star-creates.html


This is article from science site http://earthspacecircle.blogspot.com/ This is article from science site http://earthspacecircle.blogspot.com/

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Ambiguous sentence

From the article:

The image reveals two 'caps' of less ionised material at the edge of the nebula

Should it be read as that the material in these regions are less ionised compared to other regions; or that the concentration of ionised particles is lower, or something else?

If it is singly ionized nitrogen; does it have to be mentioned at all? In such case it is already mentioned in the text that green represents singly ionized nitrogen. Gunnar Larsson 19:03, 14 September 2006 (UTC)

Images

Why have they suddenly all disappeared? Several beautiful NASA public domain images have been deleted for no apparent reason.

The question has been here for a month, and no explanation offered.... were they just deleted for fun, then? 81.179.65.38 00:22, 23 December 2006 (UTC)
You don't want to have too many images--that's what Wikimedia Commons is for. I will add one more, though. It certainly is a beautiful thing.--MrFish 18:55, 7 May 2009 (UTC)

Age

Could someone please explain the discrepancy between the distance of 3300lj and the stated upper limit of the age for NGC6543 of only 1000 years? We would not be able to see this nebula if those values were correct. —Preceding unsigned comment added by 80.187.102.108 (talk) 12:22, 8 May 2011 (UTC)

external links

Please add to this article external links about Cat's Eye Nebula - scientific explanations from this site: http://earthspacecircle.blogspot.com/2012/12/the-cats-eye-nebula-dying-star-creates.html

This is article from science site http://earthspacecircle.blogspot.com/

I cannot add this because I don't have account on Misplaced Pages

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