NGC 7822

^{NGC 7822 is an emission nebula located in Cepheus, about 3,000 light years away. It’s a violent, chaotic deep-sky region where young stars are being born, their powerful radiation ionizing the surrounding gas and causing it to glow. These energetic stellar winds are also carving out the dusty streams and pillars seen throughout the nebula. The complex encompasses the emission region designated Sharpless 171, and the young cluster of stars named Berkeley 59. The complex also includes one of the hottest stars discovered, that exhibits a surface temperature of nearly 45000 K and a luminosity about 100000 times that of the Sun. The star is one of the primary sources illuminating the nebula and shaping the complex’s famed pillars of creation-type formations, the elephant trunks.}