"Solar System": HTML5 Crossword

Across

2. this planet is tilted 98 degrees (6)
8. This celestial body has a tail (5)
9. The theory that explains how the universe began (7)
11. The movement of the Earth around the Sun (10)
12. How many planets are there in the Solar System? (5)
13. it is known as the red Planet (4)
14. This belt separates the first four planets from the other four (8)
15. In the phases of the moon it means "getting bigger" (6)
17. This phenomenon happens when the Moon passes between the Sun and Earth (12)
18. It is known as the dwarf planet (5)
19. In the phases of the moon it means "getting smaller" (6)

Down

1. It is the acronym of National Aeronautics and Space Agency (4)
3. The movement of the moon around the Earth (8)
4. It is the closest planet to the sun (7)
5. The path that a planet follows around the sun is the (5)
6. This phenomenon occurs only when the sun, Earth, and moon are aligned (12)
7. Other name for the Northern Ligths (14)
10. it is the only planet with life (5)
16. This planet has the name of the Roman goddess of love (5)
17. It is known because of its rings (6)