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.
Slang Meanings