ASTR&110

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Across
  1. 3. Form of hydrogen deep inside Jupiter and Saturn
  2. 5. Comet feature, when close to Sun
  3. 6. Unit of pressure (abbrev.)
  4. 8. Theory for origin of our Solar System (abbrev.)
  5. 10. planet with lots of craters, little internal heat
  6. 12. Planet with most known moons (as of 5/2023)
  7. 14. cause of our volcanoes and Earthquakes (abbrev.)
  8. 16. processes involving wind
  9. 19. type of heating affecting Jovian moons
  10. 21. Something with the potential to cause harm (like an asteroid impact)
  11. 23. Important boundary in protoplanetary disk (two words)
  12. 24. turn from a gas to a solid, in astronomy
  13. 25. Home to CH4 lakes and seas
  14. 26. State of early Earth
  15. 28. metal involved in extinction of dinosaurs
  16. 29. Liquid that once existed on Mars
  17. 30. Layer we live on
  18. 31. Former planet
  19. 33. Most volcanically active object in our Solar System
  20. 34. Jupiter, Saturn, Uranus, etc.
  21. 37. Processes resulting from internal heat
  22. 38. Ring forming "limit"
  23. 39. drives volcanic eruptions
  24. 40. Most abundant element by mass in the Earth (abbrev.)
  25. 41. what happens to planets with geological activity
Down
  1. 1. A tested scientific idea supported by lots of evidence and observations
  2. 2. dark cloud bands on Jupiter
  3. 4. we count them to estimate ages in the Solar System
  4. 5. "mini-eclipse" used to find exoplanets
  5. 7. Comets have them, most asteroids don't
  6. 9. Features formed by liquid water
  7. 11. All the Jovian planets have them
  8. 13. “Clumping” process that formed planetesimals
  9. 14. early condensing material (abbrev.)
  10. 15. piece of the Earth's mantle
  11. 16. Measure of reflectivity
  12. 17. Caused by a meteoroid entering our atmosphere
  13. 18. A planet, but not in our solar system (prefix)
  14. 20. mass/volume
  15. 22. shape of channels formed by liquid water
  16. 24. Comet feature, when close to Sun
  17. 26. Substance that makes Neptune & Uranus blue
  18. 27. The chance that someone could be harmed by a hazard
  19. 30. primitive meteorite
  20. 32. material that used to be in a crater
  21. 35. What the Drake Equation seeks
  22. 36. Asteroid or Kuiper
  23. 37. Planet with highest surface temperature
  24. 42. Avg. distance between Earth and Sun (abbrev.)