Rside-topic-Jaden

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Across
  1. 1. the early phase of a star
  2. 6. spherical objects in space that radiate energy from their hot cores
  3. 7. omething that causes the light from the sun to hit the earth at different angles
  4. 8. what is left when a supernova explodes
  5. 9. change in a wavelength
  6. 11. what matter space is filled with
  7. 12. diagram showing the life of a star and how stars do not stay the same ever
  8. 15. burn there hydrogen fuel very quickly
  9. 16. Hydrogen atoms combine to form the heavier element helium
  10. 17. when a white dwarf cools
  11. 18. stronomer that proposed that the earth revolves around the sun
  12. 19. the very starting form of a star
Down
  1. 2. when massive stars collapse in on themselves and explode
  2. 3. stars that last about ten billion years
  3. 4. an italian astronomer that confirmed copernicus'sproposal
  4. 5. when stars start to slow down and get dim
  5. 10. stars that burn really slow and are very dim
  6. 12. stars that burn there fuel really fast and have a very short life
  7. 13. stars thought to be as hot as 100 000 000°C and may take trillions of years to cool
  8. 14. used by astronomers to see through dust into space