Across
- 4. marble sculpture of Jesus and Mary
- 7. people paying the pope to get rid of their sins
- 9. a follower of Martin Luther
- 11. exchanging goods with someone else
- 13. has the same name as the blue ninja turtle
- 14. consider a father of modern astronomy
- 16. da Vinci's most famous painting
- 18. an ideal imaginary world
- 19. capital of northern Italy's Veneto region
- 20. study of everything beyond earth's atmosphere
Down
- 1. named after the red ninja turtle
- 2. has the same name as the orange ninja turtle
- 3. Capital of Italy's Tuscany region
- 5. faster way to get news
- 6. metropolis in Italy's northern Lombardy region
- 8. took down goliath
- 10. prominent art museum
- 12. way of life centered around human values
- 15. painter, sculptor, and architect
- 17. Leonardo's earliest extant major work