Astronomy and review

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Across
  1. 1. The hottest stars are this color
  2. 4. Tropic of _ which receives direct insolation on June 21st
  3. 6. This planet's orbit looks most like a perfect circle
  4. 7. Betelgeuse is in this group of stars
  5. 9. A measurement North or south of the equator
  6. 10. motion of spinning on an axis
  7. 12. This location in New York sees the highest altitude of polaris
  8. 13. The north star
  9. 14. The most massive star
Down
  1. 2. A measure of how "flat" an ellipse is
  2. 3. The motion of a planet moving around the sun
  3. 5. The largest planet
  4. 8. A holiday celebrated on the last Thursday in November
  5. 11. The _ circle has 24 hours of daylight on June 21st