Question

What us the galaxy and universe

Answer 1

a galaxy is a collection of gas,dust and billions of stars and their solar system...is called galaxy our galaxy is milkyway galaxy...The universe is all of space which includes planets stars etc...is called universe...
hope it helps you....!!!

Answer 2

galaxies are the small clusters of stars and contains stars and have one black hole between each galaxies of universe and there are total galaxies in universe so, there are total stars in the universe thank you.
${10}^{22?}$

${10}^{11}$

${10}^{11?}$