Unit 6-1

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Across
  1. 2. n., a large group of stars
  2. 4. n., the force that keeps Earth in an orbit around the Sun
  3. 7. n., everything that exists, including Earth, the planets, the stars, and the Sun
  4. 8. n., the Sun and all of the heavenly bodies that orbit it
  5. 11. n., a complete circle or turn of Earth around the Sun
  6. 12. n., a person whose work is, or who studies, astronomy
Down
  1. 1. n., the changing views of the Moon
  2. 3. n., small objects that orbit the Sun
  3. 5. n., fuzzy clouds made of ice, rock, and dust that look like streaks of light in the night sky
  4. 6. n., a group of stars that form a figure in the sky
  5. 9. v., revolves around in space
  6. 10. n., an imaginary line around which Earth spins or rotates