I studied Earths magnetic fields and prevailing winds. I also published the first star catalog and perfected the diving bell which I used to run my own business!
The Heliocentric model was not popular in either of our lives. People believed that Earth was the center of everything and if you thought something different you were exicuted or shunned from the Church
We both believed in the Heliocentric model of the solar system
Copernicus' Published the Heliocentric model in 1543 similar to what we know today.
I studied speed and velocity, gravity, and free fall, the principal of relativity, inertia, and projectile motion. I've built compasses and telescopes. I also invented the thermoscope.