The main ideas, discoveries of Galileo Galilei.

Galileo Galilei was an Italian thinker of the Renaissance (1564-1642). Galileo was one of the first to study the solar system with a telescope. B 1609-1610. He made observations of the starry sky. Observed stars, satellites of Jupiter, determined that Venus, like the Moon, has phases. The main idea of Galileo Galilei was the objective existence of the world, while he admitted the divine origin of the world. He admitted that the material consists of small particles of atoms. He also admitted the possibility of the existence of absolute truth.