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