Table of Contents
- 1 What type of galaxy has old stars?
- 2 Do irregular galaxies have old stars?
- 3 What are 4 types of galaxies?
- 4 What type of stars are in irregular galaxies?
- 5 What are the 4 main types of galaxies?
- 6 Are all stars in galaxies?
- 7 What type of galaxy is the Andromeda Galaxy?
- 8 Is the Andromeda galaxy an irregular galaxy?
What type of galaxy has old stars?
Elliptical galaxies
Elliptical galaxies contain many older stars, but little dust and other interstellar matter. Their stars orbit the galactic center, like those in the disks of spiral galaxies, but they do so in more random directions. Few new stars are known to form in elliptical galaxies.
Do irregular galaxies have old stars?
They have no defined shape nor structure and may have formed from collisions, close encounters with other galaxies or violent internal activity. They contain both old and young stars, significant amounts of gas and usually exhibit bright knots of star formation.
What are the 3 different types of galaxies?
Types of Galaxies Astronomers classify galaxies into three major categories: elliptical, spiral and irregular. These galaxies span a wide range of sizes, from dwarf galaxies containing as few as 100 million stars to giant galaxies with more than a trillion stars.
What are 4 types of galaxies?
Galaxies 101 Scientists have been able to segment galaxies into 4 main types: spiral, elliptical, peculiar, and irregular.
What type of stars are in irregular galaxies?
Typically, irregular galaxies have lower masses and luminosities than spiral galaxies. Irregular galaxies often appear disorganized, and many are undergoing relatively intense star formation activity. They contain both young population I stars and old population II stars.
What type of galaxy is the Andromeda galaxy?
spiral galaxy
Andromeda, also known as Messier 31 (M31), is a spiral galaxy located about 2.5 million light years away. It is thought that the Milky Way and Andromeda will collide several billion years from now. The black holes located in both galaxies will then reside in the large, elliptical galaxy that results from this merger.
What are the 4 main types of galaxies?
Scientists have been able to segment galaxies into 4 main types: spiral, elliptical, peculiar, and irregular.
Are all stars in galaxies?
No, not all stars are in a galaxy. They may have once belonged to a galaxy, but they are not a part of it any more. Some of these so-called “stellar outcasts” or “intergalactic stars” have actually been observed by NASA’s Hubble Space Telescope.
What are the 3 major types of galaxies?
What Kinds of Galaxies Are There? Astronomers classify galaxies into three major categories: elliptical, spiral and irregular. These galaxies span a wide range of sizes, from dwarf galaxies containing as few as 100 million stars to giant galaxies with more than a trillion stars.
What type of galaxy is the Andromeda Galaxy?
Is the Andromeda galaxy an irregular galaxy?
A good example of this type is the Andromeda galaxy. They are very dim in comparison with the very bright spiral galaxies. Irregular galaxies are commonly small, and collectively they make up about a quarter of all the galaxies. They lack a distinct shape or form often having a chaotic appearance.
Is Andromeda a star or galaxy?
1 trillion
Andromeda Galaxy/Stars