Ok, I wanna tell a story. There is a planet earth.
Its a rock and if you look at the solar system, its really really small compared to Jupiter. So if Jupiter is a huge ball, our earth is a tiny little speck!
And now we look at the Sun. The magnificent, glorious huge humongous ball of fire, and compared to that! our Jupiter is a tiny speck! Haha...
Proceeding, we have our Sun surrounded by milllions and zillions of stars, some bigger or smaller, all kinds! So our Galaxy which holds all these zillions of balls of hydrogen, compared with that! Our dear old Sun is a tiny speck!
These galaxies spread out in the whole huge wide universe, can form HUGE clusters and these cluster can form superclusters and there are millions of galaxies...
"Hmmmmm....uh-uh, Ok now you have me lost me, sorry cant believe it anymore! You are making up stories... !"
That was the reaction some kids had by the end of this story I told them :-)
Well, thats how the universe is! Unbelievable!