Across
- 2. explosion of small stars
- 3. sequence The phase our sun is
- 7. What is the universe made up of?
- 8. hole stars larger than sun eds its life as
- 10. explosion of large stars
- 12. ____ force keeps the planets in the orbit.
- 13. heaviest element formed in the core of the star.
Down
- 1. the em waves can travel through ______.
- 4. cloud of gas and dust
- 5. always towards the centre of the orbit.
- 6. Core of sun is made of ___________
- 8. dwarf smaller stars than sun end up as
- 9. In a stable star the ----- equals the pressure from fusion.
- 10. Galaxy contain __________
- 11. satellites ___ and ___ orbit the sun