Across
- 4. viewing the colours of stars uses this technique
- 5. the 1st element and one present in all stars
- 7. when a large star explodes it releases elements into space
- 9. the 2nd element and one made from hydrogen joining together
Down
- 1. stars give off light with different colours
- 2. a ball of super heated gas
- 3. the largest known star
- 6. the more protons an atom has, the h________ it will be
- 8. these are made inside a star