What Are The Three Main Types Of Galaxies

Camila Farah

Astronomers group galaxies by shape and although there are many different types of galaxies most fall into one of three categories. Learn about the three general types of galaxies. Our own galaxy the milky way consists of more than a hundred billion stars strung across tens of thousands of light years.

The most popular types of galaxies according to their morphology are elliptical spiral and irregular.

Although there are different types we also learned that each galaxy contains the same elements but these are arranged differently for each type. Elliptical spiral spiral barred and irregular. As discussed in the section on galaxy classifications hubble found four distinct types of galaxies. Open university a britannica publishing partner see all videos for this article almost all current systems of galaxy classification are outgrowths of the initial scheme proposed by the american astronomer edwin hubble in 1926.

Three main types of galaxies. Spiral elliptical and irregular 4. Hubble and further refined by astronomer gerard de vaucouleurs. Although these are the four main types there are various types of galaxies and the way in which they are classified is by their shape.

Updated april 24 2017. There are four main categories of galaxies. Galaxies are giant structures made of dust gas stars and other celestial bodies spread through an immense area of space. This type of galaxy is composed of old stars and doesn t have interstellar dust or gases for that reason has a very low production of new stars.

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Spiral elliptical and irregular. Spiral elliptical or irregular. The most common type of galaxy found throughout the universe is the spiral galaxy. A galaxy is a cluster of stars gas and dust that are kept together by the force of gravity.

The facts while a solar system consists of all of the objects that orbit a particular star a galaxy is a larger unit of astronomical assemblage. It uses the three main types. The exact number of galaxies in the universe is has not been determined although estimates suggest there are between 200 billion and 2 trillion galaxies the oldest of which is gn z11. Elliptical spiral and irregular.

The most widely used classification scheme for galaxies is based on one devised by edwin p. Galaxies are classified into three main types. Edwin hubble established the system used to categorize galaxies. Then further breaks them down by specific characteristics openness of spirals size and extent of bars size of galactic bulges.

These types of galaxies are further divided into subcategories while at the same time other types of galaxies exist based on their size and other unique features. There are four distinct types of galaxies in the universe elliptical spiral barred spiral and irregular. Elliptical spiral barred spiral and irregular. List three main features of a spiral galaxy.

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Name the three main types of galaxies.