Space

2. the time taken by a celestial body to make a complete round in its orbit
7. the planet third in order from the sun; planet on which we live
9. the largest of the planets and fifth in order from the sun (also known as the Roman god of light, of the sky and weather)
11. the part of the earth's atmosphere where clouds rarely form
13. the planet fourth in order from the sun and conspicuous for its red color (also known as the Roman god of war)
14. any of the large bodies that revolve around the sun in the solar system

1. strength or energy as an attribute of physical action or movement
3. the planet second in order from the sun (also known as the Roman goddess of love and beauty)
4. the planet eighth in order from the sun (also the Roman god of the sea)
5. the force that attracts a body toward the center of the earth, or toward any other physical body having mass
6. the planet nearest the sun (also known as the Roman messenger god)
8. to turn about an axis or a center
10. the planet seventh in order from the sun (also known as the Father of the Titans in Greek Mythology)
11. the planet sixth in order from the sun (also known as the Roman god of agriculture)
12. a system of millions or billions of stars, together with gas and dust, held together by gravitational attraction