What is a Galaxy and is there another world inside

What r they for, where r they, what do they do, has anyone or anything went in a galaxy

Well, our earth, moon, sun and most of the stars you see at night are in a galaxy known as Milky Way. There are billions of galaxies besides the Milky Way. There are many other worlds out there too: probably more then we can count. But sadly we have not found any that have life like us, here on earth. Without life they can't do things like us. Probably all they could do without life is to hold on the each other using their gravitational force. And what are they for? well, they could also take part in holding us so that we can stay on as a living Earth.

learn astronomy our sun ins a star. an star is hot because it is a huge continuously exploding hydrogen bomb

a large number of starts each far apart but held in a big group by gravity is a galaxy
the space between galaxies is very large then there is another big group of stars

some stars have planets, our star called "sol" does it is the planet earth . you live on earth

you are supposed to be at least 13 t be on Y that is a 10 year old Q

A galaxy is a large group of stars held together by Gravity, the galaxy we live in is called the Milky Way, the Milky Way contains 100-300 billion stars, Galaxies are found all over the observable universe, we don't know exactly how many Galaxies there are but it is estimated there are hundreds of billions... go on google and search for hubble deep field... in that image alone there are about 10,000 galaxies... our closest Galaxy (excluding dwarf galaxies and globular cluster) is the Andromeda Galaxy, its approximately 2.5 billion light years away from earth

A galaxy is an enormous amount of stars, planets, moons, Black Holes, asteroids comets meteorits ,etc all in orbit around a super massive black hole


Their are many worlds inside a galaxy, so far no other world that will support human life

We're in a galaxy. Our whole solar system is. There are many galaxies like our own in the universe, millions, billions, maybe even trillions. They consist of a solar system, stars, meteors, space clouds, all that jazz (sorry, had to say that, no one does, and it's a fun term). In between galaxies is pretty much black emptiness. Space.