This is an image of NGC 6164. It is an emission nebula about 4,200 light years away in the constellation Norma. The nebula was created by a hot O-type star about 40 times as massive as the Sun. The star can be seen in the center of the image and is a mere 3-4 million years old. In another 3-4 million years, this star will end its life as a supernova. By comparison, our Sun is almost 5 billion years old and has another 5 billion years left in its lifetime. This nebula has a bipolar symmetry similar to some planetary nebulae and has an outer halo expanding into the interstellar medium.
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