✰Galaxies✰

Galaxies are a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.

Types of galaxies:

• barred spiral galaxy
• irregular galaxy
• spiral galaxy
• peculiar galaxy
• elliptical galaxy
• lenticular galaxy

-Barred Spiral Galaxy

Barred Spiral galaxies have a bar shaped structure located in the center of the spiral galaxy. Bars effect the motion of stars and interstellar gas in the galaxy.

-Irregular Galaxy

Irregular galaxies used to be a spiral galaxy or elliptical galaxy but the gravitational pull effected the galaxy and disformed its figure. They are among the smallest galaxies in the universe and are full of gas and dust. the irregular galaxy has no particular shape due to its disformity, the stars within the irregular galaxy are bunched up and have random patches throught the galaxy.

-Spiral Galaxy

Spiral galaxies are a flat rotating disc containing stars, gas, dust, and in the center of the galaxy is a bundle of stars known as the bulge. The spiral galaxy is the most common type of galaxies in the universe.

-Peculiar Galaxy
Peculiar galaxies are not normal galaxies. 
There are two types of peculiar galaxies:

• Interacting Galaxy- Interacting galaxies have been affected by the gravitational attraction of neighboring galaxies.
• Active Galactic Nuclei- These galaxies have a much higher luminosity, than most galaxies, of the electromagnetic spectrum.

There is a scientific theory that the peculiar galaxy is a result of a merge of two regular galaxies.

-Elliptical Galaxy
Elliptical galaxies are the most abundant types of galaxies but their age and dim qualities. They are often hidden compared to younger and brighter stars.

-Lenticular Galaxy
"A Lenticular galaxy is a type of galaxy which is intermediate between an elliptical galaxy and a spiral galaxy in galaxy morphological classification scheme." (wikipedia.org)