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File:Cat's Eye Halo.jpg

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
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attribution		 This file is licensed under the Creative Commons Attribution 3.0 Unported license.
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