sol 2 stars n objects in space

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Across
  1. 4. how the sun and other stars produce energy
  2. 6. The most common form of measurement in space
  3. 8. the theory that explains how the universe was formed
  4. 10. This belt is at the edge of our solar system and is where Pluto is found
  5. 13. As stars move across the HR Diagram from left to right they get (cooler/hotter)
  6. 14. Pluto’s orbit is more elliptical or __________ than the rest of the planets
  7. 15. The largest stars end begin to end their life with a large explosion called a __________
  8. 16. most massive stars produce ... elements
  9. 17. average sized stars will end their life as
  10. 19. Moons are natural _____________ of planets
  11. 21. ___________ can break off asteroids and burn up in our atmosphere.
  12. 23. the size of the sun
  13. 24. collections of billion of stars held together by gravity
  14. 26. Our solar system is located in the _______ _______ galaxy
  15. 28. Hubble and Galileo’s Telescope
Down
  1. 1. the inner/rockey plants have cores made of ... elements
  2. 2. the theory that explains how starts and solar system form
  3. 3. where stars are born
  4. 5. the age of the universe
  5. 7. The outer planets are called
  6. 9. the inner planets are...
  7. 11. Comets orbit
  8. 12. The _____ of a star determines its evolution, lifespan and fate.
  9. 18. Hubble's law sometimes called red shift explains the the universe is ..
  10. 20. Asteroids are rocky objects that are ___________ than planets.
  11. 22. a classification system for stars based on magnitude and brightness
  12. 25. stars fuse... into....
  13. 27. Comets are made of ______ and sometimes called __________ ___________