* Chandra X-Ray Observatory Photo Album: NGC 6543* Astronomy Picture of the Day** The Cat's Eye Nebula October 31, 1999** Halo of the Cat's Eye 2010 May 9* Hubble Probes the Complex History of a Dying Star—HubbleSite article about the Cat's Eye Nebula.
==Notes==== References ====Cited sources====External links==* Cat's Eye Nebula Release at ESA/Hubble* Cat's Eye Nebula images at ESA/Hubble* Chandra X-Ray Observatory Photo Album: NGC 6543* Astronomy Picture of the Day** The Cat's Eye Nebula October 31, 1999** Halo of the Cat's Eye 2010 May 9* Hubble Probes the Complex History of a Dying Star—HubbleSite article about the Cat's Eye Nebula.