11/23/2023 0 Comments Spiral galaxy definitionIt is believed to make up a large portion of a galaxy’s mass and helps hold the galaxy together. Dark matter is a mysterious substance that does not interact with light but exerts gravitational influence. In addition to the visible matter, galaxies also contain a significant amount of dark matter. The super massive black hole‘s gravity keeps stars and gas in orbit around it, preventing them from escaping. These black holes have immense gravitational pull, which helps hold the galaxy together. Without gravity, stars and other components would disperse into space.Īt the heart of most galaxies lies a super massive black hole. It is responsible for attracting matter and keeping it bound within a galaxy. Gravity plays a crucial role in the formation and stability of galaxies. The Role of Gravity in Holding Galaxies Together Irregular galaxies can be the result of galactic collisions or interactions with other galaxies. They often appear chaotic and are composed of a mix of young and old stars. Irregular galaxies, as the name suggests, do not have a defined shape. Elliptical galaxies can range in size from small to massive, with some of the largest known galaxies belonging to this category. They lack the spiral arms seen in spiral galaxies and are composed of older stars. Spiral galaxies often have a flat, rotating disk shape.Įlliptical galaxies, on the other hand, have a more rounded and elongated shape. These arms are filled with young, hot stars, while the central bulge contains older stars. Spiral galaxies, such as the Milky Way and the Andromeda Galaxy, are characterized by their distinct spiral arms that wrap around a central bulge. Galaxies come in different shapes and sizes, with the three main types being spiral galaxies, elliptical galaxies, and irregular galaxies. These components interact with each other through various forces, creating a dynamic and complex structure. A galaxy can be defined as a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and dark matter.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |