Question: What Are The 3 Major Types Of Galaxies?

What are the 3 main type of galaxies?

Key Facts & SummaryThere are four main categories of galaxies: elliptical, spiral, barred spiral, and irregular.

The most common type of galaxy found throughout the universe is the spiral galaxy.

Around two-thirds of all spiral galaxies have a bar-like structure – thus they are classified as barred spiral galaxies.More items…•.

What is the youngest galaxy?

Dubbed Abell2744_Y1, the galaxy is so far away that it takes about 13 billion years for light from the galaxy to reach our neighborhood. That means it appears as it was just 650 million years after the Big Bang, scientists say. The universe is estimated to be about 13.8 billion years old.

What is the largest known star?

The largest known star in the universe is UY Scuti, a hypergiant with a radius around 1,700 times larger than the sun.

What is the oldest thing in the universe?

Astronomers have confirmed the discovery of one the oldest and most distant objects ever known in the universe — a star-forming galaxy 12.8 billion light-years away that started forming within a billion years of the Big Bang that kickstarted everything.

Which is the oldest star?

Methuselah starThis Digitized Sky Survey image shows the oldest star with a well-determined age in our galaxy. Called the Methuselah star, HD 140283 is 190.1 light-years away. Astronomers refined the star’s age to about 14.3 billion years (which is older than the universe), plus or minus 800 million years.

Where is the sun in our galaxy?

The Sun, and everything that orbits it, is located in the Milky Way galaxy. More specifically, our Sun is in a spiral arm called the Orion Spur that extends outward from the Sagittarius arm.

What are the three main types of galaxies quizlet?

What are the three types of galaxies? Spiral galaxies, Elliptical galaxies, and Irregular galaxies.

Which galaxy is closest to our own?

The closest known galaxy to us is the Canis Major Dwarf Galaxy, at 236,000,000,000,000,000 km (25,000 light years) from the Sun. The Sagittarius Dwarf Elliptical Galaxy is the next closest , at 662,000,000,000,000,000 km (70,000 light years) from the Sun.

What is a galaxy for kids?

A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems, all held together by gravity. We live on a planet called Earth that is part of our solar system.

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. More than two-thirds of all observed galaxies are spiral galaxies.

What galaxy do we live in?

The Milky WayThe Milky Way. We live in one of the arms of a large spiral galaxy called the Milky Way.

What is the oldest thing in the galaxy?

GN-z11 is currently the oldest and most distant known galaxy in the observable universe. GN-z11 has a spectroscopic redshift of z = 11.09, which corresponds to a proper distance of approximately 32 billion light-years (9.8 billion parsecs).

What is the meaning of spiral galaxy?

Spiral galaxies are twisted collections of stars and gas that often have beautiful shapes and are made up of hot young stars. Most of the galaxies that scientists have discovered so far are spiral galaxies, as opposed to the other two main categories of galaxy shapes — elliptical and irregular.

How are galaxies categorized?

Galaxies are classified by shape. There are three general types: elliptical, spiral, and irregular. Perhaps the most familiar kind of galaxy are spiral galaxies. … The bulge and halo consist mainly of older stars, where spiral arms have more gas, dust and younger stars.