What are the 6 types of nebula?

These are emission nebulae, reflection nebulae, dark nebulae, planetary nebulae, and supernova remnants.

How many nebulae are there?

There are believed to be about 20,000 objects called planetary nebulae in the Milky Way Galaxy, each representing gas expelled relatively recently from a central star very late in its evolution. Because of the obscuration of dust in the Galaxy, only about 1,800 planetary nebulae have been cataloged.

What are the four main types of nebula?

Nebulae come in many different shapes and sizes. There are four main types of nebulae: planetary nebulae, reflection nebulae, emission nebulae, and absorption nebulae. The word nebula comes from the Latin word for cloud.

What are the 3 types of nebulae What are their characteristics?

Clouds out in space interact with light in different ways as well. This leads to the classification of three different types of nebulae: emission, reflection, and dark.

What is a nebula vs galaxy?

A nebula is a cloud of dust and gas, usually tens to hundreds of light years across. A galaxy is much larger — usually thousands to hundreds of thousands of light years across. Nebulae are one of the many things that galaxies are made of, along with stars, black holes, cosmic dust, dark matter and much more.

What are the 5 main types of nebulae?

There are five types of cloudy or nebulous objects in the sky: planetary nebulae, emission nebulae, reflection nebulae, dark nebulae and supernova remnants.

What is the most common type of nebula?

One of the most common types of emission nebula occurs when an interstellar gas cloud dominated by neutral hydrogen atoms is ionised by nearby O and B type stars.

What are the two classes of nebula?

This definition, adopted at a time when very distant objects could not be resolved into great detail, unfortunately includes two unrelated classes of objects: the extragalactic nebulae, now called galaxies, which are enormous collections of stars and gas, and the galactic nebulae, which are composed of the interstellar …

WHO classified and named the different types of nebulae?

There are actually spheres of glowing gas around the central bright star, but looking through these they appear as rings. Types of Nebulae, as known early in the 20th century. Edwin Hubble based his classification scheme for the nebulae outside our galaxy on a scientific theory of nebular evolution.

What are the different types of reflection nebula?

Reflection nebulae and emission nebulae are often seen together and are sometimes both referred to as diffuse nebulae. Some 500 reflection nebulae are known. A blue reflection nebula can also be seen in the same area of the sky as the Trifid Nebula.