Across
- 3. astronauts travel in these
- 5. our universe
- 6. this took out the dinosaurs
- 9. giant objects in the solar system
- 10. also known as a shooting star
Down
- 1. largest heat source
- 2. objects that orbit around a planet
- 4. assortment of planets around a sun
- 7. object made of ice and dust
- 8. oh snap