Celestial hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  NGC 7822
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NGC 7822 - Emission Nebula in Cepheus, Hap Griffin
NGC 7822 - Emission Nebula in Cepheus
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NGC 7822 - Emission Nebula in Cepheus

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NGC 7822 - Emission Nebula in Cepheus, Hap Griffin
NGC 7822 - Emission Nebula in Cepheus
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NGC 7822 - Emission Nebula in Cepheus

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Description

NGC7822, otherwise known as Cederblad 214 (or alternately known in other catalogs as Sharpless 171) is a large emission nebula in the constellation of Cepheus. Prominently visible are a number of bright rimmed globules undergoing a process called photoevaporation, whereby radiation from nearby stars is eroding the light gaseous elements away, leaving heavier and darker dust clouds. The compression and evolution of these globules leads to star formation. Our own sun and solar system was likely formed in a similar manner from the remnants of earlier generations of stars that gave up the heavier elements that they had synthesized during their lifetimes when they ended their existence in supernova explosions.

NGC7822 lies at a distance of approximately 2750 light-years.

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NGC 7822 - Emission Nebula in Cepheus, Hap Griffin