The Planetary Nebula NGC 1360
From Adam Block: "Near the end of its life it slowly shed gas through a stellar wind. This latent gas was later compressed by a much faster wind as the star's core became revealed. The fast wind and the gas bubble it created took only 10,000 years to do its work- short compared to the entire life of the star. The gas expands at 35km per second. Notice the red bits along the axis of the ellipsoid- these are softly glowing impulses that are traveling several times faster. Eventually everything will fade and just the white dwarf in the center will remain to cool off for the next many billion years."