Calabash Nebula, more famously known as the Rotten Egg Nebula, is a bipolar protoplanetary nebula located in the constellation Puppis. The nebula lies at an approximate distance of 4,200 light years from Earth. Its official designation is OH 231.8+4.2.
The Calabash Nebula is about 1.4 light years long and has a radius of 0.7 light years. With an apparent magnitude of 9.47, it can only be seen in telescopes.
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