he studied how he thinks the planet earth is the center of the Universe you should know this im just a kid :0
He also studied mathematics and what that kid said
stars moons earth and space
math and astromony
He also studied mathmatics
when was eudoxus born/death
Around 387 BC, at the age of 23, he traveled to Athens to study with the followers of Socrates.
Eudoxus thought that the planets revolved around the Earth not the Sun.
Aristotle
Eudoxus believed in geocentric that means the orbits of the planets go in a perfect circle
408 BCE
408 - 357 bce
Earth
347 BCE
Retrograde Motion