We must try to understand that the universe is something really gigantic, bigger than anything you can imagine! Even researchers who study this subject every day have trouble understanding what the universe looks like. We often imagine it as a kind of huge balloon filled with galaxies but a balloon that has no wall, no …
As the galaxies get closer to each other, they can collide. But as you can see by observing the stars near the Sun and the other galaxies with the telescope, there is a lot of empty space between the stars and even more between the galaxies. Also, when they collide, there is no impact, no …
Galaxies contain tens or hundreds of billions of stars like the Sun and all this mass attracts nearby galaxies. They gather in general to form clusters of galaxies and sometimes even clusters of galaxies that are called superclusters of galaxies. They can gather a handful of galaxies like the mass of the Big Dipper or …