Astronomy

What is the Universe?

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 …

The Quasar

Visually, the quasars look like bluish stars a little blurry but unlike the stars, they are among the farthest objects in the universe. These are galaxies whose nucleus emits a lot of energy. Most quasars are hundreds of millions or even billions of light years away! On the thousands of cataloged quasars, two quasars are …

Clusters of Galaxies

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 …