Is every star a sun? Is every star a different galaxy?
Sun is an average star in a galaxy known as milky way.
There are about 200 _ 400 billion stars in milky way galaxy.
Galaxy is a huge group of stars, dust, gas clouds etc orbiting a r massive black hole..There are billions of such galaxies in this universe.
Sun is a star..all stars are like Sun but some may be larger or smaller.
Mily way galaxy is about 100,000 light years in size stars are different in size, age, temperature etc..
picture credit milkyway stars .com.