there are as many galaxies as their is grains of sand all over earth and mars so it really does not matter but the answer:spiral but the least common is oval
There are three types of galaxies, all of which are the same, with the exception of their shapes. There are the Elliptical galaxies (football-shaped) the Spiral galaxies (like the Milky way; vortex-shaped) and Irregular galaxies (all shapes other than spiral and football shaped).
spiral, barred spiral, elliptical, irregular, and peculiar
No. They come in different sizes and different shapes, and have other differences as well.
The two most common shapes for galaxies are a spiral, or an ellipse (circle or oval). All other shapes are considered uncommon.
It's a galaxy
Galaxies contain stars and nebulae, as well as a large variety of other phenomena.
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.
A triangle in common with other polygons has a total sum of 360 degrees of exterior angles.
There are four classifications for galaxy shapes. Spiral, like our milky way, oblique, such as G 3417., a conjoined spiral, (these are fairly rare so far, that is we have seen very few of these so far), this type of galaxy forms when two spiral galaxies get close enough that the gravitational pull from each of the galaxies massive black holes, (located in the center of every galaxy), "pull" the two galaxies towards one another and the result is a spectacular collision that can last for many billions of years. The last classification is commonly known as "junk galaxies", (although there is no actual name), and it includes all other shapes that are not included in the other three classifications.
They all contain some form of sphere (ball)
I guess the circle or sphere ... you use it to do the many constructions to build other shapes and it is found throughout the universe
spiral,elliptical,irregular galaxies