Across
- 3. Italian astronomer and mathematician who built his own telescope and found four moons revolving around Jupiter
- 6. came up with the heliocentric theory, that put the sun in the center with the earth orbiting around it.
- 8. when something moves around another thing in a oval path.
- 9. Englishman who wrote that human beings are naturally cruel, selfish and greedy.
- 10. having the earth in the center.
Down
- 1. an invention that helps people see things that are far away, usually used for viewing the sky.
- 2. having the sun at the center.
- 4. discovered the laws of gravity
- 5. new age of reason where people discussed how governments and social institutions could be based on rational understanding
- 7. added to Copernicus's theory showing that the planetary orbits were ellipses not circles, came up with a mathematical equation to back it up.