spacestaralien:Catalogued as NGC 7635 but mostly known simply as The Bubble, this nebula with a radi
spacestaralien:Catalogued as NGC 7635 but mostly known simply as The Bubble, this nebula with a radius of 5 light-years is located in the constellation Cassiopeia and is the product of the stellar wind of the massive young star that lives in its centre. -- source link