Across
- 2. a system of stars
- 7. A regular repeating path that one object
- 9. second largest in solar system
- 10. has 5 moons
- 11. The universe is all of space and time and their contents
- 13. the fourth planet from the sun
- 14. eighth and most distant from the sun
- 16. A star is a luminous spheroid of plasma
Down
- 1. a celestial body moving in an elliptical orbit around a star.
- 3. the closest planet to the sun
- 4. brightest celestial object
- 5. one of 2 ice giants outer solar system
- 6. the fifth planet from the sun
- 8. an ever expanding ecosystem
- 12. star at the center of the solar system
- 15. Venus the second planet from the sun and earths neighbor