Unit 7: Astronomy

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Across
  1. 4. - imaginary line around which an object spins
  2. 6. - spin; turn on an axis
  3. 7. - a space rock that orbits the sun
  4. 8. - round object in space that orbits the sun
  5. 9. - cluster of stars, dust, and gas together
  6. 10. - carrying people
  7. 12. - tool used to explore
  8. 13. - a very large number
Down
  1. 1. - the North Star
  2. 2. - to go back and forth
  3. 3. - man-made object that orbits a planet
  4. 4. - person who travels into space
  5. 5. - to send a rocket into space
  6. 7. - invisible, protective blanket of air around Earth
  7. 11. - a force that pulls things toward one another