Unit One

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Across
  1. 3. Ten percent of galaxies have...
  2. 4. Energy emitted as electromagnetic radiation per sec(real brightness of a star)
  3. 6. Radius of earth orbit around the sun- Average distance from earth to sun
  4. 8. What does gyr stand for?
  5. 9. Usually composed of dust and ice and settle into irregular orbits
  6. 11. Gas giants is a type of
  7. 13. The largest planet in our solar system
  8. 14. boundary of our entire solar system
  9. 15. Millions of stars densely packed are apart of...
Down
  1. 1. The distance a which one AU covers an angle of one arcsecond
  2. 2. an example of a dwarf planet
  3. 5. Pluto lives in this belt
  4. 7. What type of galaxy do we live in?
  5. 10. Young stars are a part of what stellar association?
  6. 12. Cosmic clouds of gas and dust