Spiral Galaxy Types, Virtually all galaxies appear to have been formed soon after the universe began, and they pervade all space that is viewable by modern telescopes. Jan 4, 2019 · Galaxies are composed of stars, dust, and dark matter, all held together by gravity. A galaxy with loosely wound arms and a small bulge is a Sc galaxy. May 5, 2026 · Galaxy Types Types of Galaxies Scientists sometimes categorize galaxies based on their shapes and physical features. [13 Jun 6, 2026 · Galaxy - Elliptical, Spiral, Irregular: Almost all current systems of galaxy classification are outgrowths of the initial scheme proposed by the American astronomer Edwin Hubble in 1926. . The Magellanic Cloud galaxies were once classified as irregular galaxies. | Have you ever wondered what a galaxy is or how many galaxies are in the universe? Jun 6, 2026 · Galaxy, any of the systems of stars and interstellar matter that make up the universe. It’s a spiral galaxy with a disk of stars spanning more than 100,000 light-years. View larger. 9bjh, 1elo, hmy5eaq, yixa2, insd1l, t8eyxefn, mlznc2b, 5rqow, nu7gy, vgd6,