Galaxy Types - Science@NASA
WEBTypes of Galaxies. 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 supersized black hole – and the angle at which we view them.
Galaxy - Elliptical, Spiral, Irregular | Britannica
WEBSep 13, 2024 · In Hubble’s scheme, which is based on the optical appearance of galaxy images on photographic plates, galaxies are divided into three general classes: ellipticals, spirals, and irregulars. Hubble subdivided these three classes into finer groups.
Galaxies - HubbleSite
WEBJan 31, 2024 · Astronomers classify galaxies into three major categories: elliptical, spiral and irregular. These galaxies span a wide range of sizes, from dwarf galaxies containing as few as 100 million stars to giant galaxies with more than a trillion stars.
Types of Galaxies | Pictures, Facts, and Information - AstroBackyard
WEBThere are four distinct types of galaxies in the universe, elliptical, spiral, barred spiral, and irregular. Although these are the four main types, there are various types of galaxies and the way in which they are classified is by their shape.
Types of Galaxies | NASA Space Place – NASA Science for Kids
WEBJan 19, 2022 · A galaxy is a huge collection of gas, dust, and billions of stars all held together by gravity. All galaxies are made up of these same things. However, they come in many different shapes and sizes. Here are a few types of galaxies: Spiral galaxies look like giant pinwheels. The arms of the pinwheel are …
Galaxy morphological classification - Wikipedia
WEBGalaxy morphological classification is a system used by astronomers to divide galaxies into groups based on their visual appearance. There are several schemes in use by which galaxies can be classified according to their morphologies, the most famous being the Hubble sequence , devised by Edwin Hubble and later expanded by Gérard de ...
Types of Galaxies - Spiral, Elliptical & Irregular Galaxies - Space Facts
WEBThe most widely used classification scheme for galaxies is based on one devised by Edwin P. Hubble and further refined by astronomer Gerard de Vaucouleurs. It uses the three main types: Spiral. Elliptical.
Galaxies - NASA Science
WEBGalaxies consist of stars, planets, and vast clouds of gas and dust, all bound together by gravity. The largest contain trillions of stars and can be more than a million light-years across. The smallest can contain a few thousand stars and span just a …
Galaxies, the cosmic cities of the universe, explained by ...
WEBApr 22, 2021 · Astronomers have identified three kinds of galaxies: spirals, ellipticals and irregulars, and the differences between those kinds of galaxies reveal their complicated histories. Related: The...
Galaxies—facts and information - National Geographic
WEBApr 17, 2019 · In 1936, Hubble debuted a way to classify galaxies, grouping them into four main types: spiral galaxies, lenticular galaxies, elliptical galaxies, and irregular galaxies.