Vocabulary

4. the force of attraction between all masses in the universe
5. Polish astronomer, wrote on the Revolution of the Celestial Spheres
8. Most important scientist of the scientific revolution, first person to study the sky with a telescope.
11. a theory that Earth is the center of the solar system or the universe.
12. a step-by-step method of investigation involving observation and theory to test scientific assumptions

1. a theory that places the sun at the center of the solar system.
2. modern science emerged as a new way of gaining knowledge about the natural world
3. German astronomer, mapped the orbits of the planets
6. Greatest and most influential scientist who ever lived, created laws about gravity and motion.
7. an instrument used to view distant objects
9. a belief in reason and logic as the primary paths to knowledge
10. an idea or assumption to be tested in an experiment