Galiliyo galilei

 Galileo galilei.

Galileo di Vincenzo Bonaiuti de' Galilei was an Italian astronomer, physicist and engineer,. He did not realise that it was a planet, but he did note its motion relative to the stars before losing track of it. of stars, and Marius and Riccioli concluded the smaller sizes were not small enough to answer Tycho's argument.Galileo Galilei was born in Pisa, Italy on February 15, 1564.His contributions to observational astronomy include the telescopic confirmation of the phases of Venus, the observation of the four largest satellites of Jupiter, the observation of Saturn's rings, and the analysis of sunspots.

• What did galileo discover?
• Craters and mountains on the Moon. The Moon's surface was not smooth and perfect as received wisdom had claimed but rough, with mountains and craters whose shadows changed with the position of the Sun.
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• 1.The phases of Venus.
• 2.Jupiter's moons.
• 3.The stars of the Milky Way.
• 4.The first pendulum clock.