Explanation – The Milky Way Galaxy, which contains our Solar System, is a large spiral galaxy. It has a characteristic spiral structure, with spiral arms winding around a central bar, and a halo of stars and dark matter surrounding the whole system. A spiral galaxy is a type of galaxy characterized by its distinctive spiral arms that radiate from a central bulge. These arms are often lined with bright young stars, dust, and gas, creating a spiral pattern when viewed from afar.

Source: Forum IAS