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Rotten Egg Nebula (Planetary Nebula)


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Rotten Egg Nebula (腐った卵星雲)
Calabash Nebula (ひょうたん星雲)
Planetary Nebula (惑星状星雲)
Nb PN


別名 (Other names)
OH 231.8+4.2, Calabash Nebula, Rotten Eggs Nebula

星座 (Constellation)
とも座 (Pup) (Puppis)


距離 (Distance)
5,000光年 (5,000 light-years)

Rotten Egg Nebula (Calabash Nebula) is a planetary nebula located 5,000 light years from the Earth in the constellation Puppis.

Rotten Egg Nebula (Planetary Nebula) : Picture

Rotten Egg Nebula Rotten Egg Nebula
Rotten Egg Nebula
(C) NASA
Rotten Egg Nebula
(C) NASA
Fast expanding gas clouds mark the end for a central star in the Rotten Egg Nebula. The once-normal star has run out of nuclear fuel, causing the central regions to contract into a white dwarf. Some of the liberated energy causes the outer envelope of the star to expand. In this case, the result is a photogenic proto- planetary nebula. As the million-kilometer per hour gas rams into the surrounding interstellar gas, a supersonic shock front forms where ionized hydrogen and nitrogen glow blue. The complex shock front had been hypothesized previously but never so clearly imaged. Thick gas and dust hide the dying central star. The Rotten Egg Nebula, also known as the Calabash Nebula and OH231.8+4.2, will likely develop into a full bipolar planetary nebula over the next 1000 years. The nebula, pictured above, is about 1.4 light-years in extent and located about 5,000 light-years away toward the constellation of Puppis.
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Rotten Egg Nebula (Planetary Nebula) : Movie

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