Earth Space

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Across
  1. 2. Imaginary line splitting the East and West hemispheres.
  2. 4. The imaginary line splitting the North and South hemisphere.
  3. 7. A ball of burning gas floating in space.
  4. 10. Imaginary horizontal lines measuring distance from the equator in degrees.
  5. 12. Half of a spherical body.
  6. 14. The biggest star at the center of our solar system.
  7. 15. Imaginary vertical lines measuring distance from the Prime Meridian.
  8. 16. The time when the sun is farthest north or south of the equator.
  9. 17. The celestial body orbiting the Earth.
  10. 19. Small rocky objects that float in space and orbit planets.
Down
  1. 1. The time it takes for light to travel in a year.
  2. 2. A celestial body moving in an elliptical orbit around a star.
  3. 3. A grouping of hundreds or thousands of stars.
  4. 5. Layers of gas surrounding the Earth, protecting it.
  5. 6. The force of attraction that pulls objects together.
  6. 8. The direction in which the earth rotates.
  7. 9. A celestial body completing an orbit is one.
  8. 11. The rise and fall of the ocean.
  9. 13. The time when the sun is directly above the equator.
  10. 18. A celestial body's path around a larger one.