Earth and space

1234567891011121314151617
Across
  1. 2. a magnetised piece of metal, one end always points north
  2. 3. all of the galaxies and the space between them
  3. 8. the space around the Earth where gravity affects objects
  4. 10. a pattern of stars
  5. 13. the planet we live on
  6. 14. the distance that light travels in one year
  7. 16. an imaginary line around the middle of the Earth
  8. 17. oval shaped
Down
  1. 1. the space around a magnet where it can affect other magnetic materials
  2. 4. push away
  3. 5. the amount of force with which gravity pulls things
  4. 6. this orbits the Earth
  5. 7. millions of stars grouped together
  6. 9. a satellite made by humans
  7. 11. the path a planet takes around a star
  8. 12. a star with planets orbiting around it
  9. 15. a huge ball of gas that gives out energy