Saturn

3. the outside part or uppermost layer of something
5. a celestial body moving in an elliptical orbit around a star
8. a set of things working together as parts of a mechanism or an interconnecting network
10. a small, discrete point-like piece of matter or energy
12. the state of the atmosphere at a place and time as regards heat, dryness, sunshine, wind, rain, etc
13. the envelope of gases surrounding the earth or another planet
15. the natural satellite of the earth
16. Saturn's largest moon and the second-largest moon in the solar system
17. the father of observational astronomy, modern-era classical physics, the scientific method, and modern science
19. circular object

1. the planet on which we live
2. the largest planet in our solar system, a gas giant primarily composed of hydrogen and helium, and the name of the chief Roman god of the sky and weather, equivalent to the Greek god Zeus
4. the chemical element of atomic number
6. a continuous area or expanse which is free, available, or unoccupied
7. a repeated decorative design
8. the sun's rays as a source of energy from which power for domestic or industrial use may be generated
9. the force that attracts a body toward the center of the earth, or toward any other physical body having mass
11. characterized by strong winds and usually rain, thunder, lightning, or snow
14. a colorless, odorless, highly flammable gas, the chemical element of atomic number 1
18. the curved path of a celestial object or spacecraft around a star, planet, or moon, especially a periodic elliptical revolution