Beyond Earth

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Across
  1. 2. meteor showers coming from the debris of the asteroid 2003EH1
  2. 3. sometimes referred to as “dirty snowballs”
  3. 5. he coined the term asteroid
  4. 8. a large bright cloud of dust and gas that surrounds the nucleus
  5. 12. a bright streak of light in the sky
  6. 13. forms as gases and plasma escape from the nucleus
  7. 14. small chunks of outer space debris
  8. 15. point at which an earthquake originates
  9. 18. asteroids that approach but do not cross earths orbit
  10. 19. also called as "planetoids"
  11. 22. the most popular and short period comet
  12. 24. asteroids that cross but spend most of their time outside earths orbit
  13. 25. measures wind direction
  14. 26. comes from the debris of an asteroid named 3200 Phaeton
  15. 28. sudden shaking or movement of the crust
  16. 29. a part of a comet thats long, visible, and a glowing tail
  17. 30. tsunamis are mistakenly called this
  18. 32. located near jupiters orbits and lie within the asteroid belt
  19. 33. plants far from the sun
Down
  1. 1. a long period comet
  2. 4. large, still, and warm
  3. 6. a group of stars
  4. 7. lowest layer in the atmosphere
  5. 9. composed of ice, frozen gas, rocks, and dust
  6. 10. the amount of light reflected by a planet or any celestial objects
  7. 11. this is a periodic phenomenon
  8. 15. pertains to the state in which a tropical cyclone begins to develop
  9. 16. part of the lithosphere where earthquakes originate
  10. 17. this meteor shower originates from the constellation Perseus
  11. 20. meteor survives frictional heating and strikes the ground
  12. 21. planets close to the sun
  13. 23. rendered by earths rotation due to its tilted axis
  14. 24. cross and spend most of their time in earths orbit
  15. 27. used to detect, measure, and record seismic waves
  16. 31. a series of huge waves caused by an earthquake