A nebula from Latin: "cloud"is an interstellar cloud of dust, hydrogen, helium and other ionized gases. Originally, nebula was a name for any diffuse astronomical object, including galaxies beyond the Milky Way.
Her eyes were like the night sky in the desert. It felt like there was a whole world living inside her. - Benjamin Alire Saenz, Aristotle and Dante Discover the Secrets of the Universe. Nice quote but no.