* Observation: Aristotle was a keen observer of the natural world. He studied the stars and planets with the naked eye, noting their movements and patterns. He also observed the behavior of animals and plants, drawing conclusions about their nature.
* Logic: Aristotle was a brilliant philosopher who developed a system of logic for understanding the world. He used this system to analyze his observations and develop theories about the universe, including the idea of a geocentric model (Earth at the center).
* Basic Tools: He likely used tools like sundials to track time and the movement of the sun. He may have also used basic instruments like gnomons (simple rods) to measure shadows and determine the position of the sun in the sky.
It's important to remember that Aristotle's understanding of the universe was limited by the technology of his time. His ideas were groundbreaking for their era, but they were later proven wrong by more advanced observations and scientific methods.
