Across
- 4. When a star collapses and runs out of hydrgen it turns into a giant.
- 6. Where planets spend 90% of their lives
- 8. the star in the milky way galaxie
- 9. Spiral arms
- 10. galaxies Galaxie with an oval-like shape
- 12. the distance light travels in a year
- 14. when a star explodes
Down
- 1. 5th planet in our galaxie
- 2. Clusters of stars
- 3. hole the most massive stars collapse and form a:
- 5. A cloud of gas and dust where stars are born.
- 7. dwarf the core of an old dying star
- 8. system everything that orbits a star
- 11. no certain shape to a galaxy
- 13. star the first stage in the birth of a star - in a nebula