![]() This is why it's also known as just a spiral galaxy.īarred Spiral Galaxy- A barred spiral galaxy is a spiral galaxy with a central bar-shaped structure made up of celestial bodies. The arms themselves have no specific points of origin when it comes to a normal spiral galaxy. In the center of the galactic disc, a spiral nebula surrounds the nucleus from all sides. Normal Spiral Galaxy- Normal Spiral Galaxy is a type of galaxy with arms protruding from the nucleus in all directions. Spanning 522,000 light-years across, this galaxy is five times the size of the Milky Way.īroadly, there are two types of spiral galaxies that space scientists have observed to date. One of the largest spiral galaxies known to man is NGC 6872. The stars in a spiral galaxy are densest around the center and thin out as they reach the outer edge of the spiral arms. ![]() The most common type of galaxy in the universe, and often the largest in terms of volume, is the spiral galaxy. The disc of stars and space orbiting around the bulge creates separate spiral arms in the galaxy.Ī spiral galaxy consists of millions of globular clusters apart from a disc of stars that revolve around the center of the entire galaxy. In the spiral galaxies, the dark matter movement is guided by a structured rotation path- orbital movement, unlike other galaxies that do not possess such rotations. A spiral nebula encircles the flat disc in a spiral galaxy. They have a circular, flat disc surrounded by spiral arms with dark matter concentrations and fewer stars. Roughly two-thirds of all spirals have a bar structure that begins at the end of the central bulge, with spiral arms branching off of it. It is these stars that make the spiral brighter than the surrounding galactic disk. Spirals are branched out arms with clusters of young, hot stars in them. A halo of stars sometimes surrounds these. Most spiral galaxies have a bulge in their center, which is composed of stars. Spiral galaxies are a part of the Hubble sequence, and they consist of a flat disk, rotating with stars, gas, and dust. Some spiral galaxy examples are Pinwheel Galaxy, Andromeda Galaxy, Sunflower Galaxy, Triangulum Galaxy, and Whirlpool Galaxy. Spiral galaxies are just one of many different types of galaxies. They can contain multiple spiral arms and are known for their clusters of new star formations. The spiral galaxy is the most commonly observed galaxy shape in the universe. The gas and dust in the interstellar medium are the raw materials from which stars form. It contains somewhere between 100 and 400 billion stars, depending on the type and size of the galaxy. The galaxy is a vast system of stars, gases, and dust that makes up the universe.
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