a blue and white object in the middle of a black background

Cat's Eye Nebula Caption Though the Cat's Eye Nebula was one of the first planetary nebulae to be discovered, it is one of the most complex such nebulae ever seen. Constellation: Draco Distance: 3,000 light-years (1,000 parsecs) Instrument: Advanced Camera for Surveys/WFC Image Filters: F502N [O III], FR505N [O III], F658N (H-alpha+[N II])