Difference Between Nebula and Galaxy

Outer space is a fascinating and mysterious place for many of us. There are few things about him that we know and many that we would like to know. Difference Between Nebula and Galaxy

Most of us are aware that planet Earth is located in a galaxy called the Milky Way and surely at some point we have also heard of nebulae, but do we understand the difference between a galaxy and a nebula? If you are not sure which one it is, then we will clarify it for you.

NEBULA  Difference Between Nebula and Galaxy

A nebula is a cloud in space, made up of gases and dust. This word has derived from the Latin nebula which means “mist” or “mist” (unlike what many believe, it does not mean cloud. It was the poets Horace and Virgil who used that word to refer to “cloud”).

In earlier times (before the telescope was invented), galaxies were also called nebulae because of their fuzzy aspects; However, today this term is used exclusively for interstellar regions that are made up mostly of helium and hydrogen.

Nebulae have different shapes and sizes, but in general there are 3 types of them: reflection nebulae, dark nebulae, and emission nebulae. The first are those that reflect the light of nearby stars, the second are those that absorb the light of things that are behind them, but not that of the stars (these are usually far from them). Finally, the emission cells shine thanks to the gases that compose them and the ultraviolet radiation that interacts with them.


Galaxies are a collection, made up of planets, stars, dust, nebulae, and other interstellar elements that are held together by gravity.

There are galaxies of different sizes and they can all contain countless elements. The Milky Way and the Andromeda Galaxy are some of the best known examples.

The astronomers have offered information from various observables galaxies, however, the universe may be thousands of millions of them.

Key differences between nebulae and galaxies

  • Nebulae are clouds in space composed of dust and gases (in some cases they can be the debris of an exploded star), while galaxies are a group of stars, planets and other interstellar elements held together by the force of gravity.
  • Nebulae are found within galaxies.

Types of nebulae

  • Emission nebulae
  • Dark nebulae
  • Reflection nebulae
  • Planetary nebulae

Types of galaxies

  • Spirals
  • Elliptical
  • Irregular

They’re made of:

Galaxies: Billions of billions of stars, planets, plasma, gases.

Nebulae: dust, hydrogen, helium and plasma.

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