1. Galileo’s Observations

2. The Milky Way
Discovered the Milky Way was, in fact, NOT milk, but 1000s of stars.
This is his image of Pleiades.

3. The Moon may or may not be cheese
Sketches of the moons “bumps”. Mountains, craters.

4. Saturn’s a bit wide in the saddle
Saturn has “bulges”.
Did not know they were rings– thought they were additional worlds.

5. Sunspots
After staring at the Sun, he noticed dark spots! (Imagine that).

6. Galilean Moons
Discovered Jupiter had moons.
Uh oh! Geocentricity?

7. Phases of Venus
NOT possible if Earth was the center of everything.