The Galilean Glasses

At the same time, Galileo turned his “optical tube” to the sky and invented the telescope. She was growing 30 times. He improved the definition of the movement of bodies in space, developing the concept of inertia. This notion allowed him to explain the movement of a mass in the field of gravity. Though a …

Arab Influence

In the Muslim world, whose intellectual centers in the Middle Ages were located in Damascus (Syria) and Baghdad (Iraq) and Samarkand (Uzbekistan), it was inconceivable that theologians would only deal with religious affairs. Indeed, the interpretation of the Koran required, for example, knowledge of geography and astronomy if only to orient oneself for prayer and …

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 …