Stars and Planetary Systems

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Across
  1. 1. occurs after a stellar nebula collapses
  2. 3. fusion product in main sequence stars
  3. 7. equilibrium between forces on a star's core
  4. 8. characteristic of terrestrial planets
  5. 10. part of the sun that light coms from
  6. 11. OBAFGKM
  7. 12. colour of the hottest stars
  8. 15. element commonly found found in white dwarfs
  9. 16. terrestrial planets
  10. 19. magnitude describes a star's ________
  11. 21. total energy radiated/sec by a star
  12. 22. abreviation for a unit of measurement
  13. 23. main sequence star with the longest lifespan
  14. 24. ____dwarf, end result of main sequence star
  15. 26. line separating terrestrial & Jovian planets
  16. 27. Neptune and Uranus are called _____ planets
  17. 28. temperature unit
  18. 30. number of credits this standard is worth
Down
  1. 2. Betelgeuse is one of these
  2. 4. end result of a massive supergiant
  3. 5. the way earth's moon formed
  4. 6. process of planetesimals joining together
  5. 9. a failed star is called a __________ dwarf
  6. 13. shape of captured moons
  7. 14. circumplanetary disks form these
  8. 17. characteristic of gas giants
  9. 18. final fusion product of a supergiant
  10. 20. removes Hydrogen from the inner solar system
  11. 25. where fusion takes place
  12. 29. has no moon