Nebula

/ˈnɛb.jʊ.lə/

Meaning & Definition

noun
A cloud of gas and dust in outer space, typically one that is the birthplace of stars.
The Orion Nebula is one of the most studied regions of star formation.
A diffuse mass of interstellar matter, sometimes visible as a luminous object in the sky.
The Andromeda Galaxy contains many bright nebulae that can be observed with a telescope.
In astronomical classification, a nebula may also refer to any astronomical object that is not a star or a galaxy.
Hubble Space Telescope has captured stunning images of various nebulae throughout the universe.

Etymology

Latin word 'nebula', meaning 'mist' or 'fog'

Common Phrases and Expressions

reflection nebula
A type of nebula that reflects light from nearby stars.
planetary nebula
A shell of gas ejected from a red giant star at the end of its life cycle.
supernova remnant
The remains of a star that has exploded in a supernova, often appearing as a nebula.

Related Words

supernova
The explosion of a star that results in a brilliant flash of light and can lead to the formation of a nebula.
star
A luminous celestial body made of plasma, often formed within a nebula.
galaxy
A system of stars, gases, and dust held together by gravity, containing many nebulae.

Slang Meanings