Astronomy Crossword

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Across
  1. 3. The day of the year that marks the beginning of spring in the Northern Hemisphere.
  2. 4. The two days of the year on which the noon sun is directly overhead.
  3. 5. The study of the moon, stars, and other objects in space.
  4. 6. The day of the year that marks the beginning of fall in the Northern Hemisphere.
  5. 8. An imaginary line that passes through the planet's center.
  6. 9. The movement of an object around another object.
Down
  1. 1. A spinning motion.
  2. 2. The orbit of a satellite that resolves around Earth at the same rate that Earth rotates.
  3. 7. The two days of the year on which neither hemisphere is tilted toward or away from the sun.
  4. 10. The path of an object as it resolves around an object.