Kaden Coldren Vocabulary Crossword

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Across
  1. 2. An ancient astronomical theory that placed an immobile Earth at the absolute center of the universe.
  2. 6. An astronomical event where one celestial body moves into the shadow of another, temporarily blocking its light.
  3. 8. One of the two times each year when the Sun crosses the celestial equator, resulting in virtually equal day and night lengths worldwide.
  4. 10. Sphere: An imaginary, giant rotating dome surrounding Earth, used by astronomers to map and locate the positions of stars and planets.
  5. 12. Relating to the sky, deep space, or outer universe beyond Earth's atmosphere.
  6. 14. The modern astronomical system where the Sun sits at the center, with Earth and other planets orbiting around it.
  7. 15. A narrow band of the sky extending along the ecliptic, divided into twelve traditional signs through which the Sun, Moon, and planets appear to move.
  8. 18. The temporary, apparent backward movement of a planet through the sky relative to the background stars, caused by Earth overtaking it in orbit.
  9. 19. A prominent, recognizable pattern of stars that is smaller than an official constellation, such as the Big Dipper.
Down
  1. 1. Relating directly to the Earth, its land masses, or its physical material as opposed to the sky.
  2. 3. One of the 88 officially recognized regions of the sky used to group stars into recognizable patterns.
  3. 4. The large circular orbit centered on Earth along which the center of an epicycle moved in early geocentric planetary models.
  4. 5. Motion: The daily apparent movement of all celestial bodies across the sky from east to west, caused entirely by Earth's rotation on its axis.
  5. 7. A small geometric circle that a planet was thought to move along in ancient astronomy to explain changes in its speed and direction.
  6. 9. The apparent path that the Sun traces across the sky over the course of a year against the background stars.
  7. 11. The hypothetical fifth element that ancient and medieval philosophers believed filled the universe above the terrestrial sphere.
  8. 13. One of the two times each year when the Sun reaches its highest or lowest point relative to the celestial equator, resulting in the longest or shortest day.
  9. 16. A figure-eight curve showing the changing position of the Sun in the sky when photographed at the exact same time each day for a year.
  10. 17. A period of the year marked by specific weather patterns and daylight hours, caused by the tilt of Earth's axis relative to its orbital plane.