Galileo Galilei (1564 - 1642)

It was the astronomer in charge of the first refractive telescope in history. It noted the prominence of the moon and stains exist in the Sun.

Among its achievements is the creation of the first law of relativity, in which he stated that the inertial systems (with difficulty to change state) there is equivalence between a state of rest and movement.

Galileo also was the author of numerous works such as the Dialogue Two New Sciences and dialogue between the two systems of the world. The latter can be found all their studies and experiments.