Across
- 5. closer to the Sun, planets move ...
- 7. the topic of this crossword
- 9. a place where gravity is so strong that nothing may escape
- 11. rocks in space share no similarity in their shapes, this is described as ...
- 12. the name of our galaxy
Down
- 1. the Moon is called a natural ... of the Earth
- 2. rocks in space that circle around the Sun
- 3. when a small asteroid impacts the Earth, it causes a hole called ...
- 4. the space where there is no particles
- 6. a cloud of gas or dust in space
- 8. name given to those galaxies that have oval shapes
- 10. the force hold everything in space together