Explanations developed by scientists to explain observed facts

Latin word meaning “knowledge” or “understanding”

Greek thinker who wrote about astronomy, geography, and logic

People who looked at the world in a reasonable and logical way

Polish astronomer who believed that the planets moved around the sun in circular orbits

The first person to study the sky with a telescope

Sailed west across the Atlantic Ocean in hopes of reaching Asia

Known as one of the greatest scientists who ever lived

A step by step process for performing experiments and other scientific research