SPACE

1234567891011121314151617
Across
  1. 3. an object in outer space, made of hot gases, that can be seen in the night sky
  2. 5. to revolve around another object
  3. 8. a large, round object that travels around a star
  4. 9. Earth's only natural satellite
  5. 10. to move in a circle around something
  6. 11. a large group of stars, planets, gases and dust
  7. 14. all things that exist in space
  8. 15. a scientist who studies stars, planets, comets, and other things found in space
  9. 16. one complete circle made by a planet along its orbital path around another celestial body
  10. 17. the closest star to Earth and the center of this solar system
Down
  1. 1. an imaginary line around which an object, such as Earth, rotates
  2. 2. a natural or human-made object that orbits Earth or another object
  3. 4. to turn on a center or axis; spin
  4. 6. a small, rocky object that orbits the sun
  5. 7. a space object made of ice and dust that develops a long, bright tail as it nears the star it orbits
  6. 10. a single turn of something around an axis or a fixed point; spinning
  7. 12. a person trained to travel and work in space
  8. 13. the natural force that tends to pull objects toward each other