Astronomy Review Puzzle

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Across
  1. 4. Unit of measurement used to measure distances between objects within the solar system
  2. 5. The general name given to the inner four planets of our solar system
  3. 6. The general name given to the outer four planets of our solar system
  4. 8. If one astronomical unit is 150 million kilometers, and a planet is 600 million kilometers away, how many astronomical units is it to the planet?
  5. 14. Smallest type of star
  6. 16. The most common type of stars
  7. 17. The end result for a star like our sun
  8. 20. This element is made through fusion in the heaviest of stars
  9. 21. Our universe started out in a ________ and _________ state before rapidly expanding and cooling over time
  10. 22. This mysterious substance is responsible for the expansion of the universe
  11. 26. By analyzing the ___________ lines of a stars light, we can determine what elements it is made of.
  12. 30. The plane along which the Earth and the Sun lie along with the zodiac constellations.
  13. 33. This process indicates that most galaxies are moving away from us.
  14. 34. In astronomy, 1 Astronomical Unit is the distance between the _________ and the ________.
  15. 37. This star does NOT change position throughout the year and is useful for navigation in the northern hemisphere.
  16. 38. The phase during which a solar eclipse can take place
  17. 39. Region of many rocky bodies and dwarf planets which includes pluto.
  18. 41. During summer the tilt of the northern hemisphere is ________ the sun and during winter it is ________.
  19. 42. Region of many comets and asteroids marking the edge of our solar system.
  20. 43. Occurs when the moons gravity pulls perpendicular to the sun’s gravity
Down
  1. 1. Terrestrial planet with the fastest orbit
  2. 2. The season in the northern hemisphere when the Earth is closest to the sun
  3. 3. Death stage of an average mass star
  4. 7. The statement that the universe is expanding and the farther away a galaxy is the faster it is moving away.
  5. 8. The phase during which a lunar eclipse can take place
  6. 9. The _______ of Earth causes stars to appear to be moving throughout the year
  7. 10. Occurs when the Earth is between the moon and the sun
  8. 11. Jovian planet that shares its orbit with Pluto leading to Pluto’s demotion.
  9. 12. Jovian planet with the most moons
  10. 13. The name for the moon phase which is a sliver of a moon that will continue to get larger.
  11. 15. If one light year is 60,000 astronomical units and a star is 300,000 astronomical units away, how many light years is it to that star?
  12. 17. The name for the moon phase which is a nearly full moon that will continue to get smaller
  13. 18. The process inside of stars which keeps them alive and produces new elements and heat
  14. 19. The apparent shift in position of stars in the night sky throughout the year which can be used to estimate their distance
  15. 23. Birthplace of stars
  16. 24. Terrestrial planet with no magnetic field causing a loss of liquid water
  17. 25. Occurs when the moons gravity pulls parallel to the sun’s gravity
  18. 27. A group of stars that appear to form a unique shape or pattern
  19. 28. Unit of measurement used to measure distances between stars and galaxies
  20. 29. Terrestrial planet with runaway greenhouse effect
  21. 31. Occurs when the moon is between the Earth and the sun
  22. 32. Jovian planet where the roche limit destroys its moons
  23. 35. Jovian planet which is tilted on its side
  24. 36. Death stage of a high mass star
  25. 40. Stars with the highest gravitational force