Because it's within this area that most star formation takes place.
what is the thin gas and clusters of stars surrounds the disk of the Milky Way Galaxy.
circle
The Sun is about 27,000 light years from the center of the Milky Way, roughly 2/3rds the way out from the center to the edge of the galactic disk.
The collection of ancient stars found in the center of the Local Group is called the Galactic Halo. The Galactic Halo is a spherical region of space that surrounds the disk of the Milky Way galaxy. It is made up of old, metal-poor stars that are thought to have formed very early in the history of the Milky Way. The Galactic Halo is also home to globular clusters, which are dense groups of hundreds of thousands of stars. The Galactic Halo is thought to be the remnant of a smaller galaxy that merged with the Milky Way billions of years ago. The merger caused the smaller galaxy to be torn apart, and its stars were scattered into the Galactic Halo. The Galactic Halo is a very sparsely populated region of space. The stars are so far apart that they are difficult to see individually with the naked eye. However, the Galactic Halo can be seen in the night sky as a faint glow of light.
A huge spiraling disk of stars, dust, and gas is called a galaxy. The Milky Way is an example of a galaxy that contains our solar system.
Planet Earth belongs to the Milky Way galaxy, which is a spiral galaxy containing billions of stars, including our sun. The Milky Way is vast, spanning about 100,000 light-years in diameter. Earth is located in one of the galaxy's spiral arms, known as the Orion Arm or Local Spur.
Our solar system is located in the thin disk of the Milky Way.
The Milky Way is about 100,000 light years across.
spiral arm
Milky way galaxy looks like a stream of milk across the sky. Some of its features are; It is thick at the centre and thin at the edges. The diameter the disk is 105 light years. The galactic centre is said to be a black hole. The distance of our sun from the galactic centre is 27000 light years. 90% of its interstellar matter is in the form of hydrogen The period of revolution of sun around the galactic centre is about 220 million years with a velocity of around 250 km/s. The mass of the galaxy is estimated to be 3x1041 kg.
Open clusters are typically found in the galactic disk of spiral galaxies, including our Milky Way. They are often situated in regions of active star formation, such as spiral arms, where gas and dust are abundant. Open clusters can also be located in the halo of the galaxy, but they are less common there compared to globular clusters. Their relatively young age and loose structure distinguish them from the more densely packed globular clusters.
The stellar disk of the Milky Way galaxy is approximately 100,000 light years in diameter, and is believed to be, on average, about 1,000 light years thick. It is estimated to contain at least 200 billion stars and possibly up to 400 billion stars, the exact figure depending on the number of very low mass stars, which is highly uncertain. Extending beyond the stellar disk is a much thicker disk of gas. Recent observations indicate that the gaseous disk of the Milky Way has a thickness of around 12,000 light years ---twice the previously accepted value. The Sun (and therefore the Earth and Solar System) may be found close to the inner rim of the Galaxy's Orion Arm, in the Local Fluff inside the Local Bubble, and in the Gould Belt, at a distance of ~25,000 light years from the Galactic Center. So a rough estimate, because there is no real defined outer edge, puts our solar system about 25 thousand light years from the edge of the Milky Way Galaxy. [See Link] for pictorial impression of our location in the Milky Way.