Answer:
Universe contains galaxies, stars and planets.
Step-by-step explanation:
The Universe is the assumed to be made of three different kind of matters which is
1- Dark matter ( 25 %)
2-Normal matter (5%)
3- Dark energy (70%)
The Universe has billions of galaxies in it, each one of galaxy has planets and millions of stars. It is the collection of everything that exist in the space including clouds of gas and vast empty spaces between planets and stars.