What are the 4 types of galaxies?
In 1936, Hubble debuted a way to classify galaxies, grouping them into four main types: spiral galaxies, lenticular galaxies, elliptical galaxies, and irregular galaxies.
What is the difference between the 3 types of galaxies?
Galaxies are classified by shape. There are three general types: elliptical, spiral, and irregular. Perhaps the most familiar kind of galaxy are spiral galaxies. They have a distinctive shape with spiral arms in a relatively flat disk and a central “bulge”.
Which type of galaxy is our Milky Way galaxy?
The Milky Way is a huge collection of stars, dust and gas. It’s called a spiral galaxy because if you could view it from the top or bottom, it would look like a spinning pinwheel. The Sun is located on one of the spiral arms, about 25,000 light-years away from the center of the galaxy.
How old is our galaxy?
13.51 billion years
Astronomers believe that our own Milky Way galaxy is approximately 13.6 billion years old. The newest galaxy we know of formed only about 500 million years ago.
Which is the most beautiful galaxy?
The Andromeda galaxy is 2.537 million light-years away from Earth in the constellation Andromeda. Its ‘closeness’ to our planet makes it the most distant object visible to the naked eye on Earth. It is the nearest giant galaxy and contains approximately the same number of stars as the Milky Way.
Do galaxies die?
Galaxies die when the stars that live in them stop forming. Now, for the first time, astronomers have witnessed this phenomenon in a distant galaxy. Scientists were able to glimpse a galaxy as it ejected almost half of the gas it uses to form stars.
What are the three main types of galaxies?
Three Main Types of Galaxies. Today, the basis for how we classify galaxies is still rooted in morphology, or how the galaxies appear. Astronomers group galaxies by shape, and although there are many different types of galaxies, most fall into one of three categories: spiral, elliptical or irregular.
Which is an example of an elliptical galaxy?
Elliptical galaxy classification. 3. Irregular and lenticular galaxies. 1. . Spiral Galaxy Classification. Two examples of the spiral galaxies are: The Milky Way. The Andromeda Galaxy.
Which is the largest type of galaxy in the universe?
Elliptical galaxies are football shaped, fat in the center and tapered toward the ends. Stars in an elliptical galaxy spread out evenly from the galaxy’s center. The largest galaxies in the universe are giant elliptical galaxies which may have more than 1 trillion stars. Some elliptical galaxies are as much as 20 times bigger than the Milky Way.
What kind of galaxy is the solar Sistem?
Our solar sistem is located in a Spiral galaxy known as the Milky Way. This type of galaxies is composed of the galaxies that can’t be classified into an elliptical or spiral galaxy. This type doesn’t fit in an structure; it doesn’t possess any defined shape.