Mechanics is the oldest branch of physics. It was from the classical laws of mechanics that the ancient minds began their journey to understand the world. Galileo Galilei, one of the founders of classical mechanics, posed questions about nature of movement, beginning from the movement of planets and ending with the rolling of a spherical rock down a slope in order to know about the “moving force” behind them..

Quaggas are animals which are like a zebra in the front and like a horse at the back. These animals inhabited southern Africa. These were perhaps the only animals humans tamed before destroying them. Ouaggas severed them, as they say, faithfully and truthfully. They helped to protect herds and were useful because of their ability to detect danger before other animals could.

We have known from a long time about how the properties of elements depend on their atomic masses. But only in the 19th century did the scientific community begin active attempts to crack open the periodic law. This law explains what the properties of atoms depend on and which reactions are characteristic for different elements – despite the fact that they are all composed of the very same electrons and protons.

On February 22, 2017, NASA convened a press conference, where it promised to announce the very important discovery of something, “beyond the solar system”. There were vague hints that it could be about something related to extra terrestrial life. Instead NASA announced the discovery of star system TRAPPIST-1.