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The most widely recognized system for categorizing the general shapes that galaxies form is credited to Edwin Hubble. Although each galaxy has a unique shape, he found they could be categorized into several shapes with common features. There were the rather featureless ellipticals, and then the spiral galaxies including spirals with bars (central bar-shaped concentrations of stars like our own Milky Way); and the lenticulars which have a flat disk shape with a central bulge but no spiral arms, and also irregulars, with odd or more random shapes that fell outside these common ones. Other shape (morphology) classification systems refined or extended these basic shapes, the classification varying because of a different placement of emphasis upon specific features such as star types or densities, presence of rings, and so forth.

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What holds stars together to form shapes of galaxies?

GRAVITY!


Are all galaxies the same size?

All galaxies are different sizes and mainly four different shapes,spiral,barred spiral,elliptical and irregular


Are all of the galaxies in the universe the same?

No. They come in different sizes and different shapes, and have other differences as well.


Different kinds of galaxes?

There are three main types of galaxies: spiral galaxies (like the Milky Way), elliptical galaxies (oval or spherical in shape), and irregular galaxies (lacking a distinct shape). These classifications are based on the galaxies' shapes and structures.


What shapes do irregular galaxies have?

Irregular galaxies have no discernible shape.


What shapes of galaxies do contain H II regions?

Spiral and irregular galaxies.


What cosmic accident is believed to form many irregularly shaped galaxies?

Collisions or interactions between galaxies are believed to be the cosmic accidents that can lead to the formation of many irregularly shaped galaxies. These interactions can trigger bursts of star formation and distort the shape of galaxies, resulting in the formation of irregular shapes.


Why do the same galaxies can appear to have different shapes to different observers?

The reasons are the same as why a bird's eye view of your house would be different from the front or side elevations.


What does different galaxies look like?

Different galaxies have different shapes and sizes according to how many stars are in each. The best way to actually see them "up close" is by looking at images (some amazing ones are taken by the Hubble telescope).


What are the theories of the galaxies?

The two main theories of galaxy formation are the bottom-up theory, where galaxies form from mergers of smaller structures like dwarf galaxies, and the top-down theory, where galaxies form from the gravitational collapse of large gas clouds. The hierarchical model is a popular framework that combines aspects of both theories to explain the variety of galaxy shapes and sizes observed in the universe.


What are the 4 main galaxy shapes?

There are various ways of categorising galaxies, often based on Edwin Hubble's work on the shapes galaxies. Classifications often give the four main types of galaxies as: Spiral (including barred spiral), Elliptical, Lenticular and Irregular.


What is the possessive form of galaxies?

The possessive form for the plural noun galaxies is galaxies'.Example: Their galaxies' paths do not coordinate.