Across
- 3. sun and all objects that are gravitationally bound sun
- 5. bright objects of gas in the sky
- 7. Jupiter Neptune, Saturn, Uranus make this up
- 11. astronomical number very large number
- 12. the biggest & largest object in the solar system
- 14. Mercury,Venus, Earth, Mars make this up
- 15. the distance light travels through space
Down
- 1. a pattern of stars
- 2. the time it takes a planet to orbit around the sun
- 4. Egyptian astronomer
- 6. astronomical unit
- 8. spinning of a planet that equals one day
- 9. object in orbit
- 10. the galaxy we live
- 13. the planet we live