The Universe contains the galaxy's which contain the solar systems which contain the planets and stars.
They are all within the Universe
Like our galaxy contains billions of stars, the universe contains billions of galaxies.
A galaxy contains billions of stars. A universe contains billions of galaxies.
All stars and galaxies are in the universe.
the universe is made up of galaxies
Yes, there are stars between galaxies. When there are collisions or interactions between galaxies, stars can be ripped out of the galaxies. These stars will then wander into space between galaxies. Such stars have been observed with the Hubble Space Telescope.
in the space or galaxies or in the universe
Galaxies are the massive collection of stars. Therefore galaxies could not have formed without stars.
This is mostly theory, Galaxies are made of billions of stars. For some reason Galaxy's hold on to their stars. We do not really understand how galaxy's can yet hold their form like this. Our math so far has trouble with making sense of this. When comparing one galaxy to another, size becomes so large words are hard to describe the distance of space. There is an an incredible amount of space between everything out there. What is the distance between galaxies, why is it there, The expanding universe is trying to explain the growing spaces between galaxies yet the galaxies appear to stay bound to themselves.