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 …

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 …

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, …

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 …

Our galaxy, the Milky Way, is isolated in space but it is not alone. The galaxy closest to us is Andromeda, M31. It is 2.5 million light-years away, which is …

When a star becomes a white or red dwarf, its size is no greater than that of the Earth and it shines a little just before dying. It then dies …