Galaxy

Galaxy is a large group of a stars, that have it's form because of dark matter ring.
== Types ==
=== Spiral ===
spiral galaxies are galaxies, that have form of a spiral, consisting mostly of stars and interstellar gas. Every galaxy rotates, but spiral ones, are galaxies, where rotation is noticable.
==== Spiral with jumper ====
theese galaxies, are quite similliar to nomal spiral ones, but the difference is in the center, that "jumper", like in our host galaxy.
=== Elliptical ===
elliptical galaxies, are galaxies, that doesn't have spiral form, instead of it, elliptical galaxies have form of ellypse (circle, oval, etc.).
=== Irregular ===
irregular galaxies, are galaxies, that doesn't have any form. Irregular g. are mostly looking like huge nebulas with stars inside it.
== composition ==
=== Core ===
core of a galaxy, is a part, where globular star clusters and black holes are located. There is also galactical core black hole (Sagittarius A* in Milky Way, for example).
=== Mid zone ===
there is much mid aged stars. Our sun is located it mid zone of Milky Way.
=== Outer zone ===
there is less stars, mostly, there is interstellar gas.
== Paragalaxies ==
main article Paragalaxy.