Solar System

2. a small,frozen cluster of dust which orbits the sun
4. Meaning equal day and equal night
7. the study of the universe
9. famous for its rings
10. center of solar system
13. beautiful lights seen over the polar regions
15. closest planet to the sun
16. a meteorite that is stoney
17. known as our twin
18. the distance in which a ray of light would travel in one year
20. dwarf planet
21. shortest days of the year (June22 and December22)
22. when our view of an object is blocked by either another object or the Earths shadow
25. an imaginary line on which an object rotates
26. a group of stars, gas and dust that is held together by gravity
27. a shooting star
28. when an object is spinning it is said to be rotating

1. farthest planet from the sun
3. when the moon is more than half full but less than completley full
5. our galaxy
6. a group of stars given names by ancient astronomers
8. darkening of the moon
10. a self-luminous object
11. a brief eruption of intense high-energy radiation from the sun's surface
12. fifth planet from the sun
13. a small rocky body orbiting the sun
14. dark spots on the sun
19. when something is moving in a circle around another object
23. an object moving around a star
24. takes about 365 days to orbit the sun
27. known as the red planet