File:Cat's Eye Halo.jpg

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Summary

Description	English: An enormous but extremely faint halo of gaseous material surrounds the Cat's Eye Nebula and is over three light-years across. Within the past years some planetary nebulae been found to have halos like this one, likely formed of material ejected during earlier active episodes in the star's evolution - most likely some 50,000 to 90,000 years ago.
Date	9 September 2004
Source	http://www.spacetelescope.org/images/heic0414b/
Author	Nordic Optical Telescope and Romano Corradi
Permission ( Reusing this file)	http://www.spacetelescope.org/copyright/

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Cat's Eye Nebula

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