There are an estimated 1011 galaxies in the observable Universe. The entire Universe is much bigger than the observable Universe. It may be infinitely bigger, but it is not currently known whether this is the case.
About 30.
yes
NO! galaxys are many thousand times bigger than our solar system
At its centre.
Ultraviolet
The path of univers's galaxys
The center of the elliptical galaxy is very dense with many stars, and density decreases farther out.
See related questions
the milky wayis the galaxy that our sun is in
Between $120-$150
Itouch defiantly.
People on Earth call it the Milky Way (in English).