Space crossword

1234567891011121314
Across
  1. 4. travels approximately 300,000 km/s
  2. 6. Forms into a red supergiant
  3. 7. tool scientists use to spread light into different wavelengths to measure the wavelengths
  4. 12. The universe began 13.7 billion years ago with an enormous explosion
  5. 14. includes color temperature size composition.
Down
  1. 1. what are stars before they become a high/low mass star
  2. 2. the distance that light can travel over a year
  3. 3. formed from a low mass star
  4. 5. active young galaxies with blackholes in the center
  5. 7. earth is a ______ galaxy
  6. 8. A red supergiant forms into a...
  7. 9. When a star is round or flatten balls old star only it is...
  8. 10. a supernova can become a neutron star or a...
  9. 11. The range of wavelengths that stars emit
  10. 13. A huge group of single stars, star systems, star clusters, dust and gas bound to gravity