Name: ________ ASTRONOMY PUZZLE

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Across
  1. 2. Unit of measurement used to measure distances between stars and galaxies
  2. 3. Unit of measurement used to measure distances between objects within the solar system
  3. 7. The name for the moon phase which is a sliver of a moon that will continue to get larger.
  4. 10. The general name given to the inner four planets of our solar system
  5. 11. The phase during which a solar eclipse can take place
  6. 12. The name for the moon phase which is a nearly full moon that will continue to get smaller
  7. 13. In astronomy, 1 Astronomical Unit is the distance between the _________ and the ________.
  8. 14. The plane along which the Earth and the Sun lie along with the zodiac constellations.
  9. 15. This element is made through fusion in the heaviest of stars
  10. 17. This process indicates that most galaxies are moving away from us.
  11. 18. Jovian planet that shares its orbit with Pluto leading to Pluto’s demotion.
  12. 24. Death stage of an average mass star
  13. 25. Stars with the highest gravitational force
  14. 29. The statement that the universe is expanding and the farther away a galaxy is the faster it is moving away.
  15. 30. Our universe started out in a ________ and _________ state before rapidly expanding and cooling over time
  16. 31. Occurs when the Earth is between the moon and the sun
  17. 32. Jovian planet where the roche limit destroys its moons
  18. 33. Jovian planet which is tilted on its side
  19. 35. This mysterious substance is responsible for the expansion of the universe
  20. 36. The phase during which a lunar eclipse can take place
  21. 37. Death stage of a high mass star
  22. 38. Jovian planet with largest gravitational field
  23. 39. Smallest type of star
Down
  1. 1. Eventually the universe will end with all objects cooling off until there is no heat energy left anywhere. This is called the ________ __________ of the universe.
  2. 4. Terrestrial planet with no magnetic field causing a loss of liquid water
  3. 5. The _______ of Earth causes stars to appear to be moving throughout the year
  4. 6. The process inside of stars which keeps them alive and produces new elements and heat
  5. 7. The season in the northern hemisphere when the Earth is closest to the sun
  6. 8. This radiation from the early universe provides evidence for the cooling of the universe over time.
  7. 9. The most common type of stars
  8. 16. Planets orbiting an F,G, or K class star at a distance of 0.5 to 3.0 A.U.s are said to be in the ______________ ____________ of that star.
  9. 19. This star does NOT change position throughout the year and is useful for navigation in the northern hemisphere.
  10. 20. Region of many rocky bodies and dwarf planets which includes pluto.
  11. 21. Birthplace of stars
  12. 22. The end result for a star like our sun
  13. 23. Terrestrial planet with the fastest orbit
  14. 26. During summer the tilt of the northern hemisphere is ________ the sun and during winter it is ________.
  15. 27. The general name given to the outer four planets of our solar system
  16. 28. Terrestrial planet with runaway greenhouse effect
  17. 34. A group of stars that appear to form a unique shape or pattern
  18. 37. Occurs when the moon is between the Earth and the sun