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Galileo by annmarie is a document available to read on EtoBox.

Galileo observed dark patches on the Sun that we now call sunspots, indicating that the Sun rotates on its axis. He also observed 4 moons orbiting Jupiter, showing there were new celestial objects unknown to Aristotle and Ptolemy. Furthermore, Galileo used his telescope to show that Venus goes through phases like the Moon, providing the first observational proof for the Copernican system over the Ptolemaic system by demonstrating Venus

Author

annmarie

Language

EN