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Bubble Nebula (NGC 6822)
Encyclopedia
The Bubble Nebula in Barnard's Galaxy has the official designation of Hubble 1925 I as it was the first (Roman numeral 1) object recorded in . It includes areas of bright H II
emission. It is located north-west of the larger Hubble III
.
H II region
An H II region is a large, low-density cloud of partially ionized gas in which star formation has recently taken place. The short-lived, blue stars forged in these regions emit copious amounts of ultraviolet light, ionizing the surrounding gas...
emission. It is located north-west of the larger Hubble III
Ring Nebula (NGC 6822)
The Ring Nebula in Barnard's Galaxy has the official designation of Hubble 1925 III as it was the third object recorded in Hubble's 1925 paper, N.G.C. 6822, A Remote Stellar System. It includes areas of bright H II emission. In Paul W...
.