What is another word for spiral nebula?
Pronunciation: [spˈa͡ɪ͡əɹə͡l nˈɛbjʊlə] (IPA) 
Spiral nebula is an astronomical term used to describe a massive cloud of dust, gas, and stars in outer space that has a spiral shape. Synonyms for this term include spiral galaxy, rotating nebula, and whirlpool galaxy. Spiral galaxies are the most common type of galaxy in the universe and are characterized by a bright, central bulge containing millions of stars and curved arms that spiral outwards. They are often the sites of intense star formation and are believed to play a critical role in the evolution of the universe. Other synonyms for spiral nebula also include barred spiral galaxy, flocculent spiral galaxy, and grand design spiral galaxy.
