... Credit Copyright: Kfir Simon Explanation: Blown by fast winds from a hot, massive star, this cosmic bubble is huge. ... The massive star that created the bubble, a Wolf-Rayet star , is the bright one near the center of the nebula. ... Fast winds from this Wolf-Rayet star create the bubble-shaped nebula as they sweep up slower moving material from an earlier phase of evolution. ... Publications with keywords: Wolf-Rayet star - nebula . Publications with words: Wolf-Rayet star - nebula . ...