science puzz

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Across
  1. 1. – Biggest planet
  2. 4. Giant – Big old star
  3. 5. Giant – Very big star
  4. 7. Sequence – Main life stage of a star
  5. 8. – Splitting atoms
  6. 10. – Tool to see space
  7. 12. – Energy made in stars
  8. 13. – Path around something
  9. 15. Matter – Matter we can’t see
  10. 17. Star – Super dense star
  11. 18. – Baby star
  12. 21. – Distance light travels
  13. 23. – Star explosion
  14. 24. Hole – Space object that pulls in everything
  15. 25. Radiation – Leftover energy from Big Bang
Down
  1. 2. Shift – Light stretching away
  2. 3. – Force that pulls things
  3. 4. – Energy moving through space
  4. 6. – Spinning star sending signals
  5. 8. Line – Where ice can form in space
  6. 9. – Cloud in space
  7. 11. System – Sun and planets
  8. 14. – Same element, different mass
  9. 15. Effect – Change in waves from movement
  10. 16. – Closest planet to the Sun
  11. 19. Way – Our galaxy
  12. 20. Equilibrium – Balance inside a star
  13. 22. – Huge group of stars
  14. 23. – Planet with rings
  15. 26. Bang – How the universe started