Across
- 2. giant star
- 3. Vechile used for traveling in space
- 5. Someone who travels in space
- 6. System system of a Sun and objects that move around it
- 10. celestial body that orbits the sun
- 11. giant balls of hot gas
- 13. something that can't be classified as a planet
- 14. cosmic snowballs of frozen gases, rock, and dust
Down
- 1. giant cloud of dust and gas in space
- 3. cosmic dust, small particles floating in space
- 4. the uppermost portion of the Sun's atmosphere
- 7. invisible force that pulls objects toward each other
- 8. Collection of gas, dust, and billions of stars
- 9. lumps of rock or iron
- 12. space vehicle or missle
- 15. a smaller body that revolves around a planet