On the order of 100,000 galaxies make up the Local Supercluster, and about 51 galaxies are in the Local Group (see list of nearest galaxies for a complete list).

Dec 8, 2025 · Scientists sometimes categorize galaxies based on their shapes and physical features. Other classifications organize galaxies by the activity in their central regions – powered by a …

Nov 7, 2025 · Explore the main types of galaxies: spiral, elliptical, barred and irregular with stunning astrophotography and insights into how galaxies form, collide & evolve.

Jan 7, 2026 · What are the three types of galaxies? Learn about the three general types of galaxies: spiral, elliptical, and irregular. Almost all current systems of galaxy classification are outgrowths of …

In 1936, Hubble debuted a way to classify galaxies, grouping them into four main types: spiral galaxies, lenticular galaxies, elliptical galaxies, and irregular galaxies.

We will discuss the evolution of galaxies in more detail in The Evolution and Distribution of Galaxies, but let’s first see in a little more detail just what different galaxies are like.

An A-to-Z list of 100 notable galaxies of the night sky. Dim, diffuse objects like galaxies require lots of telescope aperture and are ideal for viewing with a dobsonian telescope.

May 2, 2025 · Most large galaxies have supermassive black holes at their centers, some with billions of times the Sun’s mass. Galaxies come in a variety of shapes, mostly spirals and ellipticals, as well as …

A galaxy is a system of stars, stellar remnants, interstellar gas, dust, dark matter, bound together by gravity. The word is derived from the Greek galaxias, literally 'milky', a reference to the Milky Way …

Jun 12, 2025 · The Cigar Galaxy (M82) is a famous starburst galaxy, where supernova explosions and stellar winds create massive outflows of gas. Another fascinating category is active galactic nuclei …