Across
- 3. stars are composed of helium and ...
- 4. a star is composed of
- 5. when atoms dont move, they are hot or cold
- 8. what is in the center of a solar system
- 11. a star which explode become a
- 13. our galaxy
- 14. set of galaxies
- 15. time to form a star (in millions years)
- 17. fusion create light and …
- 18. molecular cloud is composed of gas and ...
- 19. set of solar systems
Down
- 1. where born a star
- 2. what is on the center of a galaxy
- 6. a star works by...
- 7. it was a planet in our solar system, now it's a dwarf planet
- 9. what is the next step after a white dwarf
- 10. bigger planet of solar system
- 12. force that collapse different body, also the name of a film
- 16. pillars of creation is a ...