nebulae

Encyclopedia Article

Article

The plural form of the word nebula. Nebulae are interstellar clouds of gas and dust that exist outside the solar system. There are two kinds of nebulae: extragalactic nebulae, a huge collection of stars and dust or galaxies, and galactic nebulae, made of interstellar medium or a cloud of dust that exists between stars.

Photo Credit: 

 
"Orion's Nebula (M42), January 25, 2009" by astrorom is licensed under CC BY-NC-ND.