View Full Version : Discussion: How the Owl Nebula Got its Shape

2003-Jul-10, 05:25 PM
SUMMARY: A team of astronomers have created a model to explain how the Owl Nebula (NGC 3587) got its unique shape. They believe that the outer halo was formed when the star first lost mass and blew off its outer layer; the circular middle shell was caused by solar wind from the star blowing additional material; and then an even faster solar wind created the inner layer. Other planetary nebulae show a similar triple-shell appearance, so it's likely they formed the same way.

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