Hi,
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.
Comments and suggestions welcomed.
http://azstarman.net/CDK/NGC6164_NB2.htm
Thanks,
Bernard
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