... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. July 4, 1996 . The Cat's Eye Nebula (Revisited) . Credit: J.P. Harrington and K.J. Borkowski ( U. Maryland ), HST , NASA . ... This image from the Hubble Space Telescope reveals "The Cat's Eye Nebula" to be one of the most complex planetary nebulae known. ... APOD News: Policy on Re-Running Pictures . ... About APOD | ...