Across
- 2. our galaxy
- 7. a planet which is not anymore a part of our solar system
- 9. I.Newton discovered it
- 10. brings us vitamin D
- 12. celestial object in orbit around a planet
- 13. everything is made of it
- 14. shines in the sky
- 16. set of stars
- 17. something a clock can mesure
- 18. the planet we live on
Down
- 1. creation of the universe
- 3. separate humans from the stars
- 4. satellite of the Earth
- 5. celestial entity orbiting the sun
- 6. lack of material
- 8. biggest planet of our solar system
- 10. set of planets and sun
- 11. hole without light and matter
- 14. lack of noise
- 15. lack of light