Planet Formation and Exoplanets

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Across
  1. 3. cannot condense in space
  2. 5. Jovian planet that migrated to inner solar system
  3. 6. in astronomy, gas to solid
  4. 7. ___force which pulled together small particles to start forming the first planetesimals
  5. 8. early era of solar system with many collisions of planetesimals/asteroids/comets
  6. 9. ____ method: this method of finding a star involves the planet blocking out light going to the Earth
  7. 11. ___ method: this method of finding a star involves seeing the star move back and forth
  8. 13. where the frost line is (approximately)
  9. 15. this part of a planet is densest
  10. 17. cannot condense in space
  11. 18. ___ Space Telescope: found thousands of stars via the transit method
  12. 19. common example of hydrogen compound
  13. 20. baby planet
Down
  1. 1. what brought water to earth (plural)
  2. 2. separating due to density differences
  3. 4. planet outside our solar system
  4. 8. cannot condense inside the frost line
  5. 10. point at which the solar nebula cools enough for ice to form
  6. 12. dust cloud
  7. 14. force that pulled large planetesimals together
  8. 16. densest material in solar nebula