2. Publicized the use of the Telescope One of the 1st people to make quality telescopes (32x) Made and Sold telescopes across Europe spreading their use, and inspiring other astronomers.
3. Galileo’s Discoveries Io, Europa, Ganymede, and Callisto. Saturn’s rings (He didn’t know what they were) Phases of Venus. Sun spots.
4. Heliocentric view of the Universe Observed that Venus has phases Observed that Copernicus’ model was more effective. Actively proposed Copernicus’ heliocentric model as a real life alternative to the church’s model.
5. Direct Challenges to the church Openly challenged the Geocentric view of the universe. Phases of Venus. Jovian satellites orbit Jupiter not Earth. Recognised the existence of Sun Spots.
6. Galileo’s overall contribution to astronomy, science and culture Set a bench mark for others to question church teachings. Began to increase use of telescopes for astronomy. Made major discoveries in astronomy.
