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How many different galaxies are there?
While estimates among different experts vary, an acceptable range is between 100 billion and 200 billion galaxies, said Mario Livio, an astrophysicist at the Space Telescope Science Institute in Baltimore, Maryland.
What are the different types of galaxies what type is the Milky Way?
For example, the Milky Way, the solar system in which we reside, is classified as a barred spiral galaxy because of its general spiral shape accompanied by a bar and disk of stars at the center. The other general classifications of galaxies include spiral galaxies, elliptical galaxies, and irregular galaxies.
Why are there different types of galaxies?
Explanation: The galaxies that have been undisturbed for billions of years are likely to form spiral, disk shaped galaxies. Smaller galaxies gravitationally attract each other and merge into an elliptical shape. So the galaxy seems irregular in shape in between a merging process.
Why there are different types of galaxies?
Why there are different kinds of galaxies?
What are the four names of the galaxies?
There are four types of galaxies: elliptical, spiral, barred spiral, and irregular. Most galaxies are between 1 to 100 parsecs away and 3 to 300 light-years in diameter. Once estimated at 200 billion, the number of known galaxies is now believed to be 2 trillion.
What are the types or categories for galaxies?
The different types of galaxies not only appear different, but have different evolutionary histories as well. The three fundamental classes of galaxies are elliptical, spiral, and irregular. These categories are further broken down into subclasses, often illustrated using a Hubble tuning fork diagram.
What kinds of galaxies there are in the universe?
– There are four types of galaxies: elliptical, spiral, barred spiral, and irregular. – Most galaxies are between 1 to 100 parsecs away and 3 to 300 light-years in diameter. – Once estimated at 200 billion, the number of known galaxies is now believed to be 2 trillion.
What type of galaxies have the youngest stars?
Spiral galaxies have lots of gas and dust and lots of young stars.Other galaxies are egg-shaped and called elliptical galaxy. The smallest elliptical galaxies are as small as some globular clusters. Giant elliptical galaxies, on the other hand, can contain over a trillion stars.